SOLUTION: Vertify the identity cosx(cosx+cotx)=(cotx.cosx)(sinx+1)

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Question 401040: Vertify the identity
cosx(cosx+cotx)=(cotx.cosx)(sinx+1)


Answer by Tatiana_Stebko(1539)   (Show Source): You can put this solution on YOUR website!

Let work with left side of identity
Formula:

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