Math, asked by Yathindra7092, 11 months ago

cotA-tanA/cotA+tanA=cos squareA

Answers

Answered by sandy1816
4

Step-by-step explanation:

cotA-tanA/cotA+tanA

=(cosA/sinA)-(sinA/cosA)/(cosA/sinA)+ (sinA/cosA)

=cos²A-sin²A/cos²A+sin²A

=cos²A-sin²A

=cos2A

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