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Write the Expression as the Sine, Cosine, or Tangent of an Angle

Question 144

Multiple Choice

Write the expression as the sine, cosine, or tangent of an angle.
- cos130cos59+sin130sin59\cos 130 ^ { \circ } \cos 59 ^ { \circ } + \sin 130 ^ { \circ } \sin 59 ^ { \circ }


A) sin71\sin 71 ^ { \circ }
B) cos189\cos 189 ^ { \circ }
C) cos71\cos 71 ^ { \circ }
D) sin189\sin 189 ^ { \circ }

Correct Answer:

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