Question

Find the indicated side length by using Sin, Cos, and Tan.

Answer 1

So we are looking for side $z$ and we are given the length of hypotenuse ($b=18$) and angle $\zeta=60$.

The function I would use is sine.

$\sin(\zeta)=\frac{z}{b}$

If we solve for side $z$:

$z=b\times\sin(\zeta)$

Now fill in the data.

$z=18\times\sin(60)\approx\boxed{15.59}$