3 engineers decide to measure the distance across a small area of the ocean. Mojo and Norah are on opposite sides of the ocean. Ken is on land 4.1 miles away from mojo and 6.3 miles from Norah. If the angle formed at kens point is BCA is 37 degrees what is the distance across the ocean. Round to nearest tenth of mile.
sketch the diagram.
you have AngleSideSide
Use law of cosines>
DistanceUnknown^2=4.1^2+6.3^2-2(4.1*6.3)sin37deg