A roller coaster climbs 110 feet from ground level then drops 65 feet before climbing another 135 feet. How far does the coaster need to drop or climb to be back at ground level.

A50-foot ladder is leaning against a vertical wall. if the base of the ladder is 45 feet from the base of the wall, find the angle the bottling of the ladder makes with the ground.

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.

In triangle abc, angle c is a right angle. find the value of the trig function indicated. find tan a if c = 17 and a = 8