In triangle ABC, angle A measures 30 degrees, and the length of the side opposite angle A (side a) is 5 units. What is the length of the hypotenuse (side c) of triangle ABC?
Use the sine function, which relates the opposite side to the hypotenuse in a right triangle, defined as:
$ ext{sine(A)} = \f\frac{\text{opposite}}{\text{hypotenuse}}$
This means that in this triangle:
$\sin(30^\circ) = \f\frac{a}{c}$