A boy is flying two kites at the same time..... (read description)

Question

A boy is flying two kites at the same time. He has a = 350 ft of line out to one kite and b = 410 ft to the other. He estimates the angle between the two lines to be 30°. Approximate the distance between the kites. (Round your answer to the nearest foot.)

Answer 1

Draw and label a diagram

Use Law of Cosines

d² = 350² + 400² - (2)(350)(400) cos 30°