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Simplify the Expression sin⁡2x−1cos⁡(−x)\frac { \sin ^ { 2 } x - 1 } { \cos ( - x ) }

Question 239

Multiple Choice

Simplify the expression.
- sin⁡2x−1cos⁡(−x) \frac { \sin ^ { 2 } x - 1 } { \cos ( - x ) }


A) cos⁡x\cos x
B) −cos⁡x- \cos x
C) −sin⁡x- \sin x
D) sin⁡x\sin x

Correct Answer:

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