"Algebraically solve $\displaystyle sec\Theta csc\Theta cot\Theta$ = 4 where $\displaystyle 0\leq \Theta\leq 2\pi$, to the nearest hundredth of a radian.

So I've done $\displaystyle \frac{1}{cos\Theta} X \frac{1}{sin\Theta} X \frac{cos\Theta}{sin\Theta}$ = 4 which results in $\displaystyle \frac{cos\Theta}{cos\Theta sin^2\Theta}$ = 4. The cosines cancel out leaving the $\displaystyle sin^2\Theta$. Then I took the square root of that and the 4 and ended up with $\displaystyle sin\Theta$ = 2. But when I enter this into my calculator, I get a domain error. Can I get some help as to where I went wrong and maybe steer me in the right direction?