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Derivative of cos(45)?

1 Answer

May 30, 2018

#-sin(45)#

Explanation:

In general, you can remember the fact that,

#d/dxsin(x)=cos(x)# and #d/dx cos(x)=-sin(x)#

So we have,

#d/dxcos(x) = -sin(x)#

#=> d/dxcos(45) = -sin(45)#

Hence the answer.
Hope it Helps :)

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