Question

In a triangle A is 1/2 radian and B is 99 degree. find the value of C in radian.

Answer 1

$$\begin{gathered} \mathrm{We}\mathrm{know}\mathrm{that}1\mathrm{radian}=57.2957\mathrm{degree} \\ \mathrm{So}\angle \mathrm{A}=\frac{1}{2}\times 57.2957\mathrm{degree}=28.64\mathrm{degree} \\ \mathrm{and}\angle \mathrm{B}\hspace{0.17em}=99\mathrm{degree} \\ \mathrm{So}\mathrm{angle}\mathrm{C}=180-28.64-99=52.35\mathrm{degree}=\frac{52.35\mathrm{\pi }}{180}\mathrm{radian} \\ =0.9134\mathrm{radian} \end{gathered}$$