Unit 7 Review Part 1 (Trig)

Front

What is a reference angle?

Back

The reference angle is the acute angle formed by the terminal side of an angle in standard position and the x-axis.

Front

What is the reference angle for 275°?

Back

85°

Front

Write an equation of a sine function with a period of π and amplitude of 7.

Back

y=7sin2x

Front

What is the range of the function y=3sinθ - 2?

Back

[-5, 1]

Front

What is the domain and range of y = sinx?

Back

D: (-∞, ∞), R: [-1, 1]

Front

What is the amplitude of a sine function?

Back

The amplitude is the maximum distance from the midline of the graph to its peak or trough.

Front

How do you find the period of a sine function?

Back

The period of a sine function is calculated as 2π divided by the coefficient of x in the function.

Front

What is the period of the function y = 7sin(2x)?

Back

The period is π.

Front

What does the graph of y = 3sinx look like?

Back

It has an amplitude of 3 and oscillates between 3 and -3.

Front

What is the effect of a negative sign in front of a sine function?

Back

It reflects the graph across the x-axis.