Trigonometry Examples

$x = 2 \tan (180)$

Simplify $2 \tan (180)$ .

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Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the second quadrant.

$x = 2 (- \tan (0))$

The exact value of $\tan (0)$ is $0$ .

$x = 2 (- 0)$

Multiply $- 1$ by $0$ .

$x = 2 \cdot 0$

Multiply $2$ by $0$ .

$x = 0$

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx 2.67738042$