Trig
posted by Bri .
A 16  foot ladder leaning against the side of a house reaches 12 feet
up the side of the house. What angle does the ladder make with the
ground

Draw a picture of a right triangle.
The hypotenuse (the longest side opposite of the ninety degree angle) would be 16.
The opposite of the desired angle is 12.
The sine of what angle equals 12/16 (6/8 3/4)?