Posted by **Monica Mosher** on Monday, May 2, 2011 at 5:39pm.

verify the following identity used in calculus: cos(x+h)-cos(x)/h=cos(x)[cos(h)-1/h]-sin(x)[sin(h)/h]

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March 24, 2017
Posted by **Monica Mosher** on Monday, May 2, 2011 at 5:39pm.

verify the following identity used in calculus: cos(x+h)-cos(x)/h=cos(x)[cos(h)-1/h]-sin(x)[sin(h)/h]

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