Question

If cot α = 7/8 . Evalute (1+sinα )(1-sinα) / 1+cosα ) (1 -cosα)​

Answer 1

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Answer 2

Answer:

cot α = 7/8  

therefore

cot^2 α=49/64

sin^2 α/ cos^α = 49/64

according to question

(1+sinα )(1-sinα) / 1+cosα ) (1 -cosα)

1-sin^α/1-cos^α

= cos^2α/ sin^2α

= 49/64

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