Answer:
See Explanation
Step-by-step explanation:
<em>The question is incomplete as the image that illustrates the scenario is not given.</em>
<em>However, I can deduce that the question is about a right-angled triangle.</em>
<em>So, I will give a general explanation on how to find each of the side of the triangle, given a side and an angle.</em>
<em />
<u>For triangle A (solve for b)</u>
Using cosine formula.


Make b the subject

<u>For triangle B (solve for b)</u>
Using cosine formula.


Make b the subject

<u>For triangle C (solve for b)</u>
Using cosine formula.


Make b the subject
