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avatar+31 

Let tan(x) = 2 / 5.

 

What is the value of tan(π + x)?

 

−5 / 2

−2 / 5

5 / 2

2 / 5

 Feb 28, 2018
 #1
avatar+18360 
+2

Tan = sin/cos

   sin and cos repeat their values at  pi intervals ...with a change of sign

so   tan x  will equal    tan (x+pi)    

 

2/5

 Mar 1, 2018

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