j1441527 j1441527

29-07-2017
Mathematics

contestada

Verify the identity.
cot(x-pi/2)= -tanx

please show work.

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iloveanswers2math iloveanswers2math

29-07-2017

tan (x + pi/2) = -cot x
tan (pi/6 + pi/2) = -cot (pi/6)
tan (2pi/3) = -cot (pi/6)
-sqrt (3) = -[sqrt 3] <<< so it is true for x = pi/6

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