Question

2 sec x= tg x + cotg x​

Answer 1

Explicación paso a paso:

2sec x = tg x + cotg x

2 / cos x = sin x / cos x + cos x / sin x

2 / cos x = sin² x + cos² x / (sin x · cos x)

2 / cos x = 1 / (sin x · cos x)

(sin x · cos x) / cos x = 1 / 2

sin x = 1 / 2

x = arcsin(1 / 2) = 30º