Question

Bentuk dari tanx + cotx / secx identik dengan

Answer 1

Tan x + cot x / sec x
= (sin x/cos x + cos x/sin x) / sec x
= ((sin^2 x + cos^2 x)/sin x cos x) / sec x
= (1/sin x cos x) / (1/cos x)
= (1/sin x cos x) × cos x/1
= 1/sin x
= cosec x