Math, asked by yedhukrishnalaiju10, 3 months ago

ts
Nam
of
Prove that
cotA-tanA/cotA+tanA=2cot2A

Answers

Answered by vivekydv1109

0

Step-by-step explanation:

cotA-tanA/cotA+tanA=2cot2A

divide an multiply nuretaor and denomenatorcota+tana

LHS=

=cotA-tanA*cotA+tanA/cotA+tanA*cotA+tanA

=cot^2A-tan^2A/cot^2A+tan^2A+2tanAcotA

=cos^4A-sin^4A/cos^2A.sin^2A/cos^4A+sin^4A+2sin^2A.cos^2A/sin^2A.cos^2A

=

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