Trigonometry Examples

$\cos (\arcsin (0))$

Step 1

Draw a triangle in the plane with vertices $(\sqrt{1^{2} - 0^{2}}, 0)$ , $(\sqrt{1^{2} - 0^{2}}, 0)$ , and the origin. Then $\arcsin (0)$ is the angle between the positive x-axis and the ray beginning at the origin and passing through $(\sqrt{1^{2} - 0^{2}}, 0)$ . Therefore, $\cos (\arcsin (0))$ is $\sqrt{1}$ .

$\sqrt{1}$

Step 2

Any root of $1$ is $1$ .

$1$