Question

Choose the best answer: -tan x- cot x=

sec x + csc x
-sec x csc x
cos x sin x
cos x + sin x

Answer 1

-sec x csc x

Explanation:

-tan x- cot x= -((sin x/cos x) + cos x/ sin x))

= - ((sin² x + cos² x) / sin x cos x)

= - ( 1 / sin x cos x)

= - sec x csc x

Answer 2

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