Evaluate the expression.
-$\cos 360 ^ { \circ } - 8 \sin 90 ^ { \circ }$
A) 1
B) 0
C) $- 7$
D) $- 8$

Name: Evaluate the expression. -$\cos 360 ^ { \circ } - 8 \sin 90 ^ { \circ }$ A) 1 B) 0 C) $- 7$ D) $- 8$
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Question

Quizplus · Accepted Answer

$\cos 360 ^ { \circ } = 1$ because the cosine of a full circle (360 degrees) is 1. $\sin 90 ^ { \circ } = 1$ because the sine of 90 degrees is 1. Therefore, the expression simplifies to $1 - 8(1) = 1 - 8 = -7$.

Evaluate the Expression cos⁡360∘−8sin⁡90∘\cos 360 ^ { \circ } - 8 \sin 90 ^ { \circ }cos360∘−8sin90∘

Evaluate the Expression $\cos 360 ^ { \circ } - 8 \sin 90 ^ { \circ }$