The area of a parallelogram is 1200 cm2 The side lengths are

The area of a parallelogram is 1200 cm2. The side lengths are 90 cm and 30 cm. W are the measures of the interior angles of the parallelogram?

Solution

Area = base * height
1200 = 90*h.........so, height = 13.33cm
one angle = 90 + sin^-1(13.33/30) = 90+26.39 = 116.39

other angle = 90 - 26.39 = 63.61