Question

In a circle, let AB be diameter. Let P is point on circle. Then measure of angle APB is

• A. ${30}^o$
• B. ${40}^o$
• C. ${90}^o$
• D. ${60}^o$

Answer 1

The correct option is C ${90}^o$

According to angle of semicircle, If an angle is inscribed in a semicircle, it will be half the measure of a semicircle (180 degrees), therefore measuring 90 degrees.

So, angle APB = 90 degrees