15
QuizMultiple Choice

Changes in Period and Phase Shift of Sine and Cosine Functions — Unit test

Question 15 • AZ-Common Core Algebra II B

Angle D has a measure between 0° and 360° and is coterminal with a –920° angle. What is the measure of angle D?

Answer
A
155°
B
160°
C
165°
D
170°

Explanation

Coterminal angles differ by whole turns of 360°. Add 360° three times to −920°: −920° + 3(360°) = 160°. This is between 0° and 360°, so angle D measures 160°, choice B.

AI-written and checked against the verified answer.

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