If tan(x)=2 and x is element of [0, pi/2] find the values of
a)tan(2x)
b) sin(2x)
c) cos(2x)
This is what i did.
Since tan(x)=2, that would mean tan(2x)=4, so therefore tan(2x)=2tan(2)/1-tan(4)
If tan(x)=2 and x is element of [0, pi/2] find the values of
a)tan(2x)
b) sin(2x)
c) cos(2x)
This is what i did.
Since tan(x)=2, that would mean tan(2x)=4, so therefore tan(2x)=2tan(2)/1-tan(4)
Further hint:
johnsy123: Your notation is terrible. $\displaystyle tan^2(x)$ is not the same as tan(2x), so if tan(x) = 2 then $\displaystyle tan^2(x) = 4$. However your intention is correct in how you are trying to put it into the tan(2x) formula. Instead of tan(4), which is also not equal to $\displaystyle tan^2(x)$, you want to use 4. Make sure you understand this.
-Dan