Please show me the work so i understand

2. Find the reference angle of -11π/3.

5. If �θ = –18°, find the exact value of θ� in radians.

6.If �θ = 3, find the value of �θ in degrees correct to the nearest tenth of a degree.

13.The radius of a circle is 6 inches. If the central angle is 5π/3, find the length of the intercepted arc. (Round to the nearest hundredth.)

1 answer

2.
-11π/3 + 4π = π/3

5.
-18° * π rad/180° = π/10 radians

6.
3rad * 180°/πrad = 540/π = 171.9°

13.
s = rθ = 6*5π/3 = 10π = 31.42 in