Carlos started at sea level, climbed a cliff to a height of 14 m, then dived 19 m. find the level at which his dive ended.

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?

Find the solution on the interval [0, 2pi)