A sign is in the shape of a rhombus with a 60° angle and sides of 9 cm long. Find its area to the nearest tenth
3 answers
base * height = 9 * 9 cos 60 = 9*4.5
height = h
sin 60 = h/9
h = 9 sin 60
so
area = 81 sin 60 = 70.14
sin 60 = h/9
h = 9 sin 60
so
area = 81 sin 60 = 70.14
This didn’t help much!!
1 answer