A25 foot ladder leans against a building. the ladder's base is 13.5 feet from the building. find the angle of elevation formed by the ladder and the ground. (round to the nearest tenth.)

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

How do i do this activity, is appreciated

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39