Question

Find the length of arc YXZ.

A. s=3
B. s= 60
C. s= 75
D. s= 236

Answer 1

B. S=60 , dont know for sure

Answer 2

C. s= 75

Explanation:

One radian is the angle subtended by an arc length equal to the radius of the circle.

∅=s/r where s is the arc length ∅ the angle and r the radius of the circle.

Thus s=∅×r

In the circle provided arc s subtends and angle of 5 radians.

s= 5 radians× 15

=75