Question

Evaluate:$\sin \frac{\mathrm{\pi }}{4}$

Answer 1

To evaluate :$\sin \frac{\mathrm{\pi }}{4}$

The radian measure of $\mathrm{\pi }={180}^0$

$\frac{\mathrm{\pi }}{4}$$=$$\frac{{180}^0}{4}$$={45}^0$

$\sin \frac{\mathrm{\pi }}{4}$ $=$$\sin {45}^0$

$=$$\frac{1}{\surd 2}$ (The value of $\sin {45}^0$$=$$\frac{1}{\surd 2}$)

Thus, required value of $\sin \frac{\mathrm{\pi }}{4}$$=$$\frac{1}{\surd 2}$.