High School Block:
Pre-Calculus 120A
Pre-Calculus 120A provides foundations for calculus and includes algebra, trigonometry, and functions. Learners will become familiar with the evaluation, transformation, graphing, and inverses of functions; extend algebra skills to logarithmic and exponential expressions; use the unit circle to develop an understanding of trigonometric relationships and identities. Prior knowledge of algebra and geometry serve as a foundation for the concepts introduced in Precalculus 120A, and directly builds on material from Precalculus 110. This course develops preparatory skills for calculus; complements and is co-requisite with Pre-Calculus 120B.
Topics include graphs of functions and related equations; inverse, radical, exponential, and logarithmic functions; angles in standard position in degrees and radians; unit circle; trigonometric ratios and sine, cosine and tangent equations to solve problems; trigonometric identities.
Pre-Calculus 110 is recommended prior to enrolling in Pre-Calculus 120A.
CONTEXTS AND CONCEPTS
Strategies
- Using algorithms, thinking strategies, and reason to explore mathematical ideas
- Using technology to explore, estimate, verify, and visualize mathematical concepts
- Choosing the most efficient approach strategically and with flexibility
- Determining the reasonableness of solutions and verifying correctness of solutions
- Modeling with mathematics to make sense of phenomena
Processes
- Deriving mathematical rules and algorithms
- Using calculators
- Using simulations
- Graphical flexibility through transformations (stretch and translation)
- Working with domain and range and non-permissible values
- Working with test points and critical values
- Converting between formats, representations, and equivalents
- Similarity
- Formulating and using inverses to obtain solutions
Fluency
- CAST rule
- Horizontal line test
- Absolute value
- Invariant points
- Exponential functions
- Logarithmic functions
- Periodic functions
- Sinusoidal curves
- Degrees and radians
- Polar coordinates
- Arc lengths
- Coterminal angles
- Trigonometric identities
- Algebra with exponents and logarithms, and associated laws
Communication
- Expressing mathematical relationships using constants, variables, and functions
- Formulating and justifying mathematical arguments
- Representing mathematical ideas using symbolic, graphical, and numerical forms.
- Communicating ideas orally using mathematical language
GRADE 12
Strand: Relations and Functions
Big Idea: Algebraic and Graphical Reasoning
Skill Descriptor: Analyze transformations of functions.
Global Competencies: CM, CTPS
Achievement Indicators:
- Classify transformations applied to graphs or equations of functions
- Describe the effects of transformations by comparing the graph π¦ = aπ(b(π₯ β β)) + π to the graph of π¦ = π(π₯)
- Describe transformations of functions using functional notation
- Describe transformations of functions using mathematical language
- Sketch the graph of y = aπ(b(π₯ β β)) + π from a given sketch of the function π¦ = π(π₯) where the equation of π¦ = π(π₯) is not given
- Write the equation of a function whose graph is transformed from the graph π¦ = π(π₯)
- Write the equation of a transformed function given descriptions of the transformations applied to π¦ = π(π₯)
Skill Descriptor: Analyze inverse functions.
Global Competencies: CM, CTPS
Achievement Indicators:
- Describe the effects on coordinate points and/or functions when reflected through the line π¦ = π₯
- Sketch the reflection of π¦ = π(π₯) through the line π¦ = π₯ given a graph or equation of π(π₯)
- Write the equation of a function given the graph of its reflection through the line π¦ = π₯
- Explain how the graph of the line π¦ = π₯ can be used to sketch the inverse of a relation
- Explain how the transformation (π₯, π¦) β (π¦, π₯) can be used to sketch the inverse of a relation
- Justify if the reflection of a function through y = x is a function
- Sketch the graph of the inverse function given the graph of a function
- Identify the domain restrictions of a function so its inverse is a function
- Determine the inverse function given a graph y = π(π₯)
- Determine the inverse function algebraically given the equation y = π(π₯)
- Explain relationships between π(π₯) and the inverse function of π(π₯)
- Identify if two functions are inverses of each other algebraically and/or graphically including functions previously covered and functions within Pre-Calculus 120A
- Apply properties of inverses to the graphs of trigonometric functions
Skill Descriptor: Analyze radical functions.
Global Competencies: CM, CTPS
Achievement Indicators:
- Identify the characteristics of radical functions including domain, range, and intercepts
- Sketch the graph of the function
by applying transformations to the graph of the function
- Explain why the domain and range of the function π¦ = π(π₯), and its square root function
, may differ
- Determine radical expressions from given graphs
- Generalize characteristics between radical functions and their indices
Skill Descriptor: Analyze exponential functions.
Global Competencies: CTPS
Achievement Indicators:
- Identify characteristics of exponential functions including domain, range, intercepts, and equations of horizontal asymptotes
- Sketch the graph of an exponential function by applying transformations to the graph
- Determine exponential equations that represent given graphs
Skill Descriptor: Analyze logarithmic functions.
Global Competencies: CTPS
Achievement Indicators:
- Identify characteristics of logarithmic functions including domain, range, intercepts, and equations of asymptotes
- Sketch the graph of the functionΒ
by applying transformations to the graph of the function
- Determine logarithmic equations that represent given graphs
Strand: Number
Big Idea: Number Sense
Skill Descriptor: Evaluate logarithmic and exponential expressions.
Global Competencies: CM, CTPS
Achievement Indicators:
- Change expressions from logarithmic form to exponential form and vice versa
- Determine the exact value of a logarithm without technology
- Justify the estimated value of a logarithm using benchmarks
- Approximate the values of natural logarithms or powers base π using technology
Big Idea: Algebra
Skill Descriptor: Apply logarithmic laws to solve problems.
Global Competencies: CTPS
Achievement Indicators:
- Generalize the laws for logarithms using numeric examples and exponent laws
- Expand logarithmic expressions with variable and numerical inputs using logarithmic laws
- Condense logarithmic expressions with variable and numerical inputs using logarithmic laws
- Write equivalent logarithmic expressions with different bases
Skill Descriptor: Solve problems that involve exponential and logarithmic equations.
Global Competencies: CM, CTPS
Achievement Indicators:
- Determine solutions of exponential equations in which the expressions can be rewritten with the same integer base
- Determine solutions of exponential equations in which the bases are not powers of one another
- Explain why a value obtained in solving logarithmic equations may be extraneous
- Model phenomena with exponential functions
- Interpret characteristics of functions within given post-secondary, work ready, or life contextual problems
- Solve exponential growth and decay problems
- Solve financial application problems involving exponential equations
- Solve problems involving πx and ln x
Strand: Shape and Space
Big Idea: Trigonometry
Skill Descriptor: Represent angles in standard position.
Global Competencies: CTPS
Achievement Indicators:
- Sketch angles in standard position (positive or negative)
- Sketch angles in standard position with measures expressed in the form π Ο radians where π is a rational number
- Convert angle measurements between radians (exact value or decimal approximation) and degrees
- Determine the reference angle of given angle measurements
- Determine coterminal angles within given domains
- Determine general form of all coterminal angles given angles
- Solve problems using the relationship between the radian measure of an angle in standard position and the length of the arc cut on a circle of radius r
Skill Descriptor: Develop the equation of the unit circle.
Global Competencies: CTPS
Achievement Indicators:
- Derive the equation of the unit circle from the Pythagorean Theorem
- Describe the six trigonometric ratios using a point π(π₯, π¦) that is the intersection of the terminal arm of an angle and the unit circle
- Generalize the equation of a circle with centre (0, 0) and radius π, and circles with centres not at the origin and radius π
Skill Descriptor: Solve problems using trigonometric ratios for angles.
Global Competencies: CM, CTPS
Achievement Indicators:
- Determine the approximate value of a trigonometric ratio for any angle with technology
- Determine the exact value of a trigonometric ratio for special angles
- Justify strategies used to determine the exact value of trigonometric ratios
- Determine angles in a specified domain given the value of a trigonometric ratio
- Determine the exact values of trigonometric ratios given the coordinates of a point on the terminal arm of an angle in standard position
- Determine the angles in a specified domain given a point on the terminal arm of an angle in standard position
- Determine the exact values of trigonometric ratios given the value of one trigonometric ratio in a specified domain
Skill Descriptor: Solve problems using sine, cosine, tangent functions.
Global Competencies: CM, CTPS
Achievement Indicators:
- Sketch the graph of π¦ = sin π₯, π¦ = cos π₯, and π¦ = tan π₯
- Determine the characteristics of π¦ = π sin π(π₯ β π) + π, π¦ =π cos π(π₯ β π) + π, or π¦ = tan π₯ given a graph
- Determine the characteristics of π¦ = π sin π(π₯ β π) + π, π¦ =π cos π(π₯ β π) + π, or π¦ = tan π₯ given an equation
- Describe how transformations affect the graphs of sinusoidal functions
- Sketch graphs of the form π¦ = π sin π(π₯ β π) + π or π¦ =π cos π(π₯ β π) + π without technology
- Determine the sine and cosine functions that represent given graphs
- Model cyclical phenomena using sinusoidal functions
- Analyze graphs of trigonometric functions to solve problems
Skill Descriptor: Solve trigonometric equations.
Global Competencies: CTPS
Achievement Indicators:
- Verify if a given value is a solution to a trigonometric equation
- Solve first-degree trigonometric equations (i.e., one or more steps to solve)
- Solve second-degree trigonometric equations
- Determine the approximate solution(s) of first- and second-degree trigonometric equations with a restricted domain using technology
- Determine the approximate general solution of given first- and second-degree trigonometric equations using technology
Skill Descriptor: Prove trigonometric identities algebraically.
Global Competencies: CM, CTPS
Achievement Indicators:
- Verify trigonometric identities numerically
- Explain why verifying the two sides of a trigonometric identity are equal for given values is insufficient to conclude the identity is valid
- Determine the non-permissible values of a trigonometric identity using known trigonometric identities
- Prove algebraically that a given trigonometric identity is valid
- Determine the exact value of a trigonometric ratio using sum, difference, or double-angle identities for given angles