Question

What’s the measure of angle S?
a. 50°
b. 60°
c. 100°
d. 30°

Answer 1

The answer is D (30degrees) :)

Answer 2

D

Explanation:

If two secants intersect to form the vertex of an angle outside a circle and the sides of the angle intercept arcs on the circle, then the measure of the angle is equal to one-half the difference of the measures of the arcs intercepted by the sides of the angle.

So

`85-25=60`

`(60)/(2)=30`