sin x + cos x. ctg x =
Matematika
Yayasmcky
Pertanyaan
sin x + cos x. ctg x =
1 Jawaban
-
1. Jawaban arsetpopeye
sin x + cos x cot x
= sin x + cos x . (cos x)/(sin x)
= sin x + (cos^2 x)/(sin x)
= (sin^2 x + cos^2 x)/(sin x)
= 1/(sin x)
= cosec x