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# verify that cscx / (cotx + tanx ) = cos x?

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- 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

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- Anonymous1 decade ago
yeah looks good 2 me.

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