Asked by Anonymous
Tan4x=4tanx(1-tan^x)/1-6tan^x+tan^^x ,prove
Answers
Answered by
gourav
tan4x
=tan2.2x
=2tan2x/1-tan22x
=2.2tanx/1-(2tanx/1-tan2x)2
=tan2.2x
=2tan2x/1-tan22x
=2.2tanx/1-(2tanx/1-tan2x)2
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