Trigonometry Examples

$\sin (\frac{1}{2} x) = 3 \cos (2 x)$

Step 1

Subtract $3 \cos (2 x)$ from both sides of the equation.

$\sin (\frac{1}{2} x) - 3 \cos (2 x) = 0$

Step 2

Combine $\frac{1}{2}$ and $x$ .

$\sin (\frac{x}{2}) - 3 \cos (2 x) = 0$

Step 3

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.