Question

Find the angular size of a circular object with a 1-inch diameter viewed from a distance of 4 yards.

The angular size of the object is Iº.
(Do not round until the final answer. Then round to the nearest hundredth as needed.)

Answer 1

• 0.40°

Explanation:

• 4 yards = 4*36 in = 144 in

Angle is x

• tan(x/2) = 1/2 * 1/144
• x/2 = arctan (1/288)
• x /2 = 0.1989428794619145°
• x = 2*0.1989428794619145°
• x = 0.39788575892°
• x = 0.40° (rounded)