Q. 55 - Precalculus Enhanced with Graphing Utilities

Question

Convert angle in radian to degree-

$-\frac{\mathrm{\pi }}{2}$

Step-by-Step Solution

Answer

The required value is,

$-\frac{\mathrm{\pi }}{2}radian=-90°$

Step 1. Given information

To convert $-\frac{\mathrm{\pi }}{2}$radian to degree.

Step 2. Calculation

Converting from radian to degree,

$$\begin{gathered} -\frac{\mathrm{\pi }}{2}radian=\left(-\frac{\mathrm{\pi }}{2}\right).1radian \\ =\left(-\frac{\mathrm{\pi }}{2}\right).\frac{180}{\mathrm{\pi }}degrees \\ =-90° \end{gathered}$$