Pre Cal question here- Trigonometric identities question?

  • Thread starter Thread starter THE-U
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THE-U

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Could someone tell me how to do this...

You are supposed to verify this. Meaning you have to verify the left side is equal to the right side.

cos (?/2 - x) -cos (x-?) cot (? - x)= sec (?/2 - x)
 
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