Answer:
Before that: SOH is a mnemonic for S(ine)= O(pposite)/H(ypotenuse). CAH (not coh!) is a mnemonic for C(osine)= A(djacent)/H(ypotenuse). TOA is a mnemonic for - you guessed it! - T(angent) = O(pposite)/A(djacent).
At this point, you just have to grab a calculator to find the values of the various functions and do simple multiplications.
5:[tex]tan 49 = \frac{14}x \rightarrow x= \frac{14}{tan49} \approx 12.17[/tex]
6: [tex]sin 51 =\frac{14}x \rightarrow x = \frac{14}{sin51} \approx 18.01\\[/tex]
7: [tex]sin 63= \frac{16}x \rightarrow x= \frac{16}{sin63} \approx 17.96[/tex]
8: [tex]sin 15 = \frac{16}x \rightarrow x= \frac{16}{sin15} \approx61.82[/tex]
