verify that cscx / (cotx + tanx ) = cos x?
- Mein Hoon NaLv 71 decade agoFavorite Answer
cscx / (cotx + tanx )
= csec x /( 1/tan x + tan x)
= csc x / ((1+ tan ^2 x)/tan x)
= csc x tan x / (sec ^2 x)
= (1/sin x) (sin x/cos x) cos ^2 x
= cos ^2 x/ cos x
= cos x
proved by math kp
- Anonymous1 decade ago
yeah looks good 2 me.
Still have questions? Get your answers by asking now.