The answer is D because when you insert it into a calculator it gives you D. Yet, if you do it manually you still get the same number .
It looks like you had some of the numbers correct, but you just labeled it and rounded it incorrectly, and the teacher gave you super partial credit for it.
For my work, I'm assuming that side A is opposite of angle A and side B is opposite of angle B, etc...
Answer:
7
/8
0.875
Step-by-step explanation: