9
QuizMultiple Choice

Trigonometry of General Triangles and Trigonometric Functions — Test

Question 9 • Mathematics III

Angle cap d has a measure between 0 degrees and 360 degrees and is coterminal with a negative 920 degrees angle. What is the measure of angle cap d ?

Answer
A
160 degrees
B
165 degrees
C
170 degrees
D
155 degrees

Explanation

Coterminal angles differ by a whole number of 360° rotations. Add 3 × 360° = 1,080° to −920°: −920° + 1,080° = 160°. So angle d measures 160°, choice B.

AI-written and checked against the verified answer.

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