Question

Buktikanlah identitas trigonometri cos x csc x = cot x

Answer 1

Csc x = 1/sinx
cot x = cosx/sinx

cos x cscx = cot x
cos x 1/sinx = cot x
cos x/sinx = cot x
cot x = cot x
terbukti

Answer 2

Cos x . csc x = cot x
bukti:
cos x . csc x = cos x . 1/sin x
                    = cos x / sin x
                    = cot x

semoga membantu ya :)