Question

Two points A and B lie on opposite sides of a river. Another point C is located on the same side of the river as B at a distance of 240 ft from B. If angle ABC is 120° and angle ACB is 15°, find the distance across the river from A to B. (Round your answer to two decimal places.)

Answer 1

Hint:



use the law of sines to solve for x

Answer 2

you'll need angle A first, so

A+B+C = 180

A+120+15=180

A+135=180

A = 180-135

A = 45