Math, asked by wahmed178, 1 year ago

integration of cotx ?

Answers

Answered by atul21
1
1. Proof

Strategy: Make in terms of sin's and cos's; Use Subtitution. 
  cot x dx = cos x sin xdxset 
  u = sin x. 
then we find 
  du = cos x dx

substitute du=cos x, u=sin x 
 cos x sin xdx = du usolve integral

= ln |u| + C

substitute back u=sin 

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