What is the 30°-60°-right triangle theorem?

a) in a right triangle, the hypotenuse is three times as long as a leg if and only if the measure of
the angle opposite that leg is 30°.

b) in a right triangle, the hypotenuse is twice as long as a leg if and only if the measure of the
angle opposite that leg is 60°.

c) in a right triangle, the hypotenuse is twice as long as a leg if and only if the measure of the
angle opposite that leg is 30°.

d) in an equilateral triangle, the hypotenuse is twice as long as a leg if and only if the measure of
the angle opposite that leg is 30°.