Laugh out loud a pun isn't it
1/2u - 3 x u
2u x u = 2u
answer 2u - 3
2m3 is. not over3 because. 2is lower than 3
angle for triangle is 180°
angle ACB is 75° because it has mention that is an isosceles triangle
So that angle of BAC is 180°-75°-75°=30°