Prove the following: cos(π2-x)cos(π2-y)-sin(π2-x)sin(π2-y) = – cos (x y) - Mathematics and Statistics | Shaalaa.com
Prove the following: cos(π2-x)cos(π2-y)-sin(π2-x)sin(π2-y) = – …
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Misc 27 - Find derivative: x2 cos pi/4 / sin x - Class 11
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