The rest of the question is as following
What is the distance from person B to the top of the hill?
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Answer;
The attached figure represents the explanation of the problem.
So, it is required to find the distance BH
It will be calculated as following
∠A = 65° and ∠B = 80°
∴ ∠H = 180° - (65° + 80° ) = 35°
But the side AB = 45
So, we can use the sine rule to find the side BH
[tex] \frac{AB}{sin \ H} = \frac{BH}{sin \ A}[/tex]
[tex]BH = \frac{sin \ A}{sin \ H} * AB[/tex]
[tex]BH = \frac{sin \ 65}{sin \ 35} * 45[/tex]
∴ BH ≈ 71.1 feet
∴ The distance from person B to the top of the hill ≈ 71.1 feet
