A ladder 6 meters long just reaches the top of a building and its foot makes a 76° angle with the ground. Which of the following equations could be used to calculate the height, h, of the building?

Question

I) sin76°=h/6

II) 6cos14°=h

III) cos76°=h/6

Answer 1

I) sin76 = h/6

the sine of an angle is the opposite side divided by the hypotenuse