Math Self-Test Solutions

Answer : The angle subtended at the center by this arc is ∠AOB = 30◦ (Figure C.1(a)).

Therefore, the length of the arc is 30360 of the circumference = 30 360 ×

2pi × 1 = pi6 = 3.141/6 = 0.5235. 5. What are the coordinates of point A?