Question

Tolong yang baik hati dibantu ya.. Yang c dan e

Answer 1

Gambar nya ga jelas maaf jadi nya gakbisa jawab ka

Answer 2

C) (sin x)/(1 + cos x) + (sin x)/(1 - cos x)
= (sin x (1 - cos x) + sin x (1 + cos x)) / (1 + cos x)(1 - cos x)
= (sin x - sin x cos x + sin x + sin x cos x) / (1 - cos^2 x)
= (2 sin x) / (sin^2 x)
= 2/(sin x)
Atau
= 2 cosec x

e) (cosec ¢ - cot ¢) x (1 + cos ¢)
= (1/(sin ¢) - (cos ¢)/(sin ¢)) x (1 + cos ¢)
= (1 - cos ¢)/(sin ¢) x (1 + cos ¢)
= (1 - cos ¢)(1 + cos ¢)/(sin ¢)
= (1 - cos^2 ¢)/(sin ¢)
= (sin^2 ¢) / sin ¢
= sin ¢

^ = pangkat