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AP Precalculus Unit 3: Periodic Phenomena

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AP Precalculus Unit 3: Periodic Phenomena

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Questions and Answers

What is the formula to find the measure of an angle in radians?

θ=r/s

θ=s/r (correct)

θ=s*r

θ=s+r

What is the measure of a complete turn around the circle in radians?

π radians

2π radians (correct)

4π radians

3π radians

What is the name given to angles that share the same starting and ending positions but have different measures?

Coterminal angles (correct)

Supplementary angles

Conjugate angles

Complementary angles

What is the ratio of side lengths for a 45°-45°-90° triangle?

1:1:1 times square root of 2 Signup and view all the answers

What is the range of values on the y-axis for the sine and cosine functions?

[-1,1] Signup and view all the answers

What is the purpose of special triangles on the unit circle?

To aid in evaluating trigonometric functions with exact ratios Signup and view all the answers

What is the definition of periodic phenomena?

Occurrences or relationships that display a repetitive pattern over time or space Signup and view all the answers

What is the period of a periodic function?

The gap between repetitions of the function Signup and view all the answers

What is the definition of an interval of increase?

A set of x-values from the lower to the maximum point Signup and view all the answers

What is the definition of concavity?

When the rate of intervals of increase/decrease is changing Signup and view all the answers

What is an angle in standard position?

An angle with its initial side parallel to the positive x-axis and its vertex at the origin Signup and view all the answers

What is the average rate of change of a function?

The change in output divided by the change in input Signup and view all the answers