Answer:
first things first which one is angle B. if would be easier if you labeled them .
Step-by-step explanation:
but any ways see if the image attached can help out
b
40
it would be 20 too but there is no opition for this i hope i helped
3.428571429 or approximately 3.43
3/2
= 1.5
7/8
= 0.875
1.5/0.875
= 1.714285714
1.714285714/0.5
= 3.428571429
or approximately 3.43