SOLUTION: Prove the identity : sin[(pi/2 - x ) + y ] = cos (x - y)
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Question 1011260: Prove the identity : sin[(pi/2 - x ) + y ] = cos (x - y)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Use the sine and cosine of the difference of angles to assure yourself that \ =\ \cos x)
and \ =\ \sin x)
. Then:
\ +\ y\right\]\ =\ \sin\left(\frac{\pi}{2}\ -\ x\right)\cos y\ +\ \cos\left(\frac{\pi}{2}\ -\ x\right)\sin y)
)
John
My calculator said it, I believe it, that settles it
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