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

$1$ .

$1$