Solve. (cos x)/(1-tan x)+(sin x)/(1-cot x)=cos x+sin x

Gaige Haynes

Gaige Haynes

Answered question

2022-09-02

Solve. cos x 1 tan x  + sin x 1 cot x = cos x + sin x

Answer & Explanation

Kathleen Mack

Kathleen Mack

Beginner2022-09-03Added 9 answers

left side: cos x 1 sin x cos x + sin x 1 cos x sin x = cos x cos x sin x cos x + sin x sin x cos x sin x
= cos 2 x cos x sin x + sin 2 x sin x cos x
= cos 2 x cos x sin x + sin 2 x ( cos x sin x )
= cos 2 x sin 2 x cos x sin x = ( cos x sin x ) ( cos x + sin x ) cos x sin x
= cos x + sin x
= right side

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