Evaluating the Inverse Sine on a Calculator

Because the output of the inverse function is an angle, the calculator will give us a degree value if in degree mode and a radian value if in radian mode. Calculators also use the same domain restrictions on the angles as we are using.

In radian mode, ${\sin }^{-1}(0.97)\approx \mathrm{1.3252.}$ In degree mode, ${\sin }^{-1}(0.97)\approx \mathrm{75.93°.}$ Note that in calculus and beyond we will use radians in almost all cases.