+0  
 
0
79
2
avatar+258 

What is the value of tan(π+x)tan(π+x) ?

I came up with the second answer..... 

Hev123  Mar 4, 2018
Sort: 

2+0 Answers

 #1
avatar+86528 
+1

tan (pi + x)  =

 

tan x  +  tan pi

_____________   =

1  -  tan x tan pi

 

 

(2/5) + 0

__________     =

 1  -  (2/5)*0

 

 

2/5

 

 

cool cool cool

CPhill  Mar 4, 2018
edited by CPhill  Mar 4, 2018
 #2
avatar+12266 
+1

Sin (x ) and  sin (pi + x) have the same BUT negative values

cos (x ) and  cos (pi+x)  have the same values but NEGATIVE

 

so  tanx  =  sin x / cos x

      tan (x+pi) = -sinx / -cosx  = sinx/cos x  = 2/5

ElectricPavlov  Mar 4, 2018

30 Online Users

New Privacy Policy (May 2018)
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  Privacy Policy