Angle A and B are equal = 75 degrees
6 sin 75 = height = ~ 5.8 6 cos 75 = 1/2 of the base base = 3.1
area = 1/2 base * height = 1/2 3.1 * 5.8 = 9 units2
Since this is an isoceles, angle A and B = 75
Now we do sin and cos stuff here
6 sin 75 =~ 5.8
6 cos 75 = 3.1
and i think the area would be (3.1*5.8)/2 which is 8.99 ~ 9
not exactly
but eh