If the altitude of an isosceles triangle is 53 centimeters and each of the two equal angles measures 77°, how long are the two equal sides?

Answer 1

If you have the height, you have the opposite side. The length of the side is the hypotenuse. We can use sin to solve.

sin(77) = 53/x

x=53/sin(77)

x=54.4 cm