Question

Lisa spots the mother bird on a branch above the nest. She
measures an angle of elevation to the bird of 67�. Find how
high the mother bird is above the ground, to the nearest foot.

Answer 1

(I looked up the original problem and Lisa is 15 feet from the tree)

Answer 2

you want to know the distance of the rightmost side (from the tree up to the bird)

you also have the adjacent side

so the appropriate ratio is tan(theta) = opposite/adjacent

opposite is your unknown (x), adjacent is 15, theta is 67 degrees

solve for x, make sure you're in degrees mode on your calculator.