Question #01baa

1 Answer
Jul 6, 2016

I think the question should be to provetan x + cot x = 1/ (sinx * cos x) instead of tan x + cos x = 1/ (sinx * cos x)

Explanation:

I think the question should be to provetan x + cot x = 1/ (sinx * cos x)

tan x + cot x = sin x/ cos x + cos x /sin x =>

= (sin x * sin x )/ (sin x cos x) + (cos x * cos x)/ (sin x * cos x)

= (sin^2 x + cos^ 2 x)/ (sinx cos x)

= 1/( sin x cos x)