Question

(cosec A + sin A) (cosec A - sin A) = cot² A + cos² A​

Answer 1

(cosecA+sinA)(cosecA-sinA) = cot^2A+cos^2A

cosec^2A - sin^2A ,= cot^2A+cos^2A

1+cot^2A - (1-cos^2A) = RHS(by identity

1+cot^2A - 1+cos^2A = RHS

cot^2A + cos^2A = cot^2A+cos^2A

Hence proved

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Answer 2

Answer:

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