# Answer to Question #15539 in Trigonometry for liezel guevarra

Question #15539

tan x+sin x sec x- sin x cos x/sec x-csc x=tan x+sin x sec x

Expert's answer

**- sin x cos x/sec x-csc x=**

__tan x+sin x sec x__

__tan x+sin x sec x__

The bolded parts are equal, so that means that

**for all x, but this is false.**

__- sin x cos x/sec x-csc x=0__
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