I have to simplify (or get it in terms of tan I guess?) $\displaystyle \cot (\frac{2\pi }{3} - x)$
I'm not sure how to get the reference angle and subtract the angle 'x' from it to get an expressional value...how would I do this?
I have to simplify (or get it in terms of tan I guess?) $\displaystyle \cot (\frac{2\pi }{3} - x)$
I'm not sure how to get the reference angle and subtract the angle 'x' from it to get an expressional value...how would I do this?
note the cofunction identity ...
$\displaystyle \cot{t} = \tan\left(\frac{\pi}{2} - t\right)$
so ...
$\displaystyle \cot\left(\frac{2\pi}{3} - x\right) = \tan\left[\frac{\pi}{2} - \left(\frac{2\pi}{3} - x\right)\right] = \tan\left(x -\frac{\pi}{6}\right)$