The Solution:
Given the figure below:
We are required to find the length of DK to the nearest tenth of an inch.
By the Trigonometrical Ratio, we have that:
![\sin 43^o=\frac{\text{opp}}{\text{hyp}}=(16)/(DK)](https://img.qammunity.org/2023/formulas/mathematics/college/uxmgx10qm3teqjmv35yx55hyso7u3clpwx.png)
![\sin 43^o=(16)/(DK)](https://img.qammunity.org/2023/formulas/mathematics/college/tikibqlrhdu4ux2lz3mdjbus07sznpdgsd.png)
Cross multiplying, we get
![DK\sin 43^o=16](https://img.qammunity.org/2023/formulas/mathematics/college/gq9cw38c89mzofd4pwwmg9fwpmyhddsq7y.png)
Dividing both sides by sin43, we get
![DK=(16)/(\sin 43^o)=23.4605\approx23.5^o](https://img.qammunity.org/2023/formulas/mathematics/college/n52kkkxwki4nbmg5i3vi2w5491jfion9fl.png)
Therefore, the correct answer is 23.5 degrees.