Question

Mohon bantu bagaimana penyelesaiannyaa... tau jawaban tapi gatau jalan

Answer 1

[ 1 + tan x ] / [ sec x + csc x ] =
= [ 1 + (sin x /cos x) ] / [ (1/cos x) + (1/sin x) ]  ..kalikan sin x cos x/sinx cos x
= (sinx cos x + sin² x) / (sin x + cos x )
=  sin x ( sin x + cos ) / (sin x + cos x )
= sin x