Use the fundamental identities to find the value of the trigonometric function.
-cos 0° - 3 sin 90°
A) 0
B) -2
C) -3
D) 1
Correct Answer:
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-csc ϴ > 0 and
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-40° and 80°
A)-30°
B)60°
C)120°
D)240°
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-Find
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