# Math Help - Trigonometric equation for x and y

1. ## Trigonometric equation for x and y

Solve for $x,y$: $\left(\sin(x-y)+1\right)\left(2\cos(2x-y)+1\right)=6$.

2. Originally Posted by james_bond
Solve for $x,y$: $\left(\sin(x-y)+1\right)\left(2\cos(2x-y)+1\right)=6$.
You just have to remember that

$-1 \leq \sin \alpha \leq 1$ and $-1 \leq \cos \alpha \leq 1$ for every $\alpha$ real

3. It just seemed too difficult but yeah thanks (again).