Mar 10, 1:29:25 PM The top of a lighthouse, T, is 215 feet above sea level, L, as shown in the diagram
below. The angle of depression from the top of the lighthouse to a boat, B, at sea
26º. Determine, to the nearest foot, the horizontal distance, x, from the boat to the
base of the lighthouse.
26°
215 ft
B
L

The answer is b) 32 your welcome

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.