Answer:
The equation you should solve to find b is:
Option D. sin 35° / 9 = sin 40° / b
Explanation:
m<A=35°
m<B=40°
a=9
b=?
We can use the Law of sines:
sin A / a = sin B / b
Replacing the given values:
sin 35° / 9 = sin 40° / b
This is option D.
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