Finding the length of a side

In this diagram the angle theta is labeled. To find the length of the hypotenuse (and the angle and the  opposite is given)  side we will have to use Sine, which will then be; sin(theta)= opposite:hypotenuse. Or you could also use, cos(theta)= adjacent:hypotenuse

To find the adjacent (and if the angle is given and the opposite is given) side we will have to use Tangent, which will then be; tan(theta)= opposite:adjacent.