Question

A 12-foot ladder rests against a brick wall at angle of 60°. Which expression gives the value of x, the height on the brick wall where the ladder rests?

Answer 1

the diagonal of the triangle representa the lenght of the ladder  and is 12 foot

as the Sen alpha = CO/H, OF THIS FORMULA , CO IS THE HICK OPPOSITE AND REPRESENT THE  HEIGHT

CO = Sen alpha*H = Sin (60°)* 12 = 10,39 FOOT