20
QuizMultiple Choice

Trigonometric Functions — Test

Question 20 • Math 3

Which of the following represents the measures of all angles coterminal with a negative 220 degrees angle?

Answer
A
140 plus 360 n , for any integer n
B
140 plus 360 n , for any whole number n
C
360 plus 140 n , for any whole number n
D
360 plus 140 n , for any integer n

Explanation

Coterminal angles differ by whole rotations of 360°. Adding 360° to −220° gives 140°, so all such angles are 140° + 360n, where n can be any integer. Integers include negative values, which are needed to represent rotations in the opposite direction; therefore, the correct choice is “140 plus 360n, for any integer n.”

AI-written and checked against the verified answer.

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