how do you find the derivative of y=cosx by using the limit process of(adsbygoogle = window.adsbygoogle || []).push({});

limit as h --> 0 is f(x+h) - f(x) / all over h.

i did this with y=sinx, and the answer was cosx, but i'm having trouble figuring out y=cosx.

help?

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# Derivative help of y=cosx!

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