An acute angle trigonometric function problem If the adjacent sides of the parallelogram are 10 meters and 15 meters long respectively, and their included angle is 60 degrees, then the area of the parallelogram is?

An acute angle trigonometric function problem If the adjacent sides of the parallelogram are 10 meters and 15 meters long respectively, and their included angle is 60 degrees, then the area of the parallelogram is?

Make the height h on the side of 15 meters, and the angle corresponding to h is 60 degrees
Sin60 = H / 10 = radical 3 / 2
H = 5 times root sign 3
S = 15 * 5 times root 3 = 75 times root 3