Question

value of( 1 + cos x )(1 + cot^2x)(1- cos x )​

Answer 1

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Answer 2

Step-by-step explanation:

(1+cos x)(1-cos x) (1+cot^2x)

(1+cos x)(1-cos x)(cosec^2x)

here, (1+cos x) (1-cos x)=1-cos^2x

so, (1-cos^2x)(cosec^2x)

(sin^2x)1/sin^2x=1

(1+cos x)(1-cos x) (1+cot^2x)=1