Here’s an trigonometry elevation problem to keep you occupied:
Bob the rock climber wants to know how far left until he gets to the summit of the sheer (vertical) rock face. He is communicating with his friend Jerry on the ground who has worked out that from his (Jerry’s) point of view the top of the cliff is 100 meters away. Jerry also finds out that the angle of elevation of the top of the cliff is 55 degrees and the angle of elevation of Bob is 25 degrees. How far does Bob have left to travel?
