If 3cotA=4, check whether 1-tan^2A/1+tan^2A=cos^2A-sin^2A or not.

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asked Feb 5, 2018 in Mathematics by Kundan kumar (49,132 points) 34 435 1354

If 3cotA=4, check whether 1-tan2A/1+tan2A=cos2A-sin2A or not.

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+1 vote
answered Feb 5, 2018 by Vikash Kumar (144,729 points) 8 11 26
 
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