SOLUTION: How to prove :sin theta * cos(90-theta) + cos theta * sin(90-theta)= 1
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Question 867458: How to prove :sin theta * cos(90-theta) + cos theta * sin(90-theta)= 1
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Hint:
\ =\ \sin\theta)
and
\ =\ \cos\theta)
Substitute and apply the Pythagorean Identity.
John
My calculator said it, I believe it, that settles it
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