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simplify the expression:

(sin(x+π)) / (cos(x-π))

Guest May 18, 2018
 #1
avatar+87293 
+2

sin  ( x + pi)

_________

cos ( x - pi)

 

 

sinx * cos pi  + sin pi * cos x

_______________________ 

cosx *cos pi + sinx * sin pi

 

 

 sin x * (-1) + (0) * cos x

___________________

oos x * (-1)  = sin x * (0)

 

 

-sin x

_____

-cos x

 

 

tan x

 

 

 

cool cool cool

CPhill  May 18, 2018

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