Trigonometry Examples

$\arcsin (\sin (- \frac{π}{10}))$

Step 1

Add full rotations of $2 π$ until the angle is greater than or equal to $0$ and less than $2 π$ .

$\arcsin (\sin (\frac{19 π}{10}))$

Step 2

The result can be shown in multiple forms.

Exact Form:

$\arcsin (\sin (\frac{19 π}{10}))$

Decimal Form:

$- 0.31415926 \dots$