Math, asked by navneetraghuwanshi13, 8 months ago

8. If 3 cot A = 4, check whether
1- tan² A/
1 + tan’A
= cos^2A - sin^2A or not.

Answers

Answered by upadhyayayush72

2

1 - tan^2A / sec^2A

= 1- sin^2A/cos^2A / 1/cos^2A

= cos^2A - sin^2A/cos^2A / 1/cos^2A

= cos^2A - sin^A = R.H.S

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