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Based on the values that Tom does know, how can he determine the height of the triangle? A. Find the sine ratio using angle B or angle C. B. Determine the average value of sides b and c. C. Find the cosine ratio using angle B or angle C. D. Determine the sum of all three sides and then divide by 3. 191. Samantha is estimating the width of a lake. She stands at Point B and looks through a long-range scope. She sees a boat shed at Point A that is about 9 miles away and a tall tree at Point C that is about 7 miles away. Which of the following is closest to the distance, in miles, across the lake from Point A to Point C? A. 9.7 B. 10.6 C. 11.4 D. 12.9 193. The Forest Service builds three rest stops at positions designated D, Y, and L, enclosing a triangular region. The distance DY is 5 miles, the distance LY is 8 miles, and What is the area of the enclosed region, to the nearest 0.1 square mile? Trigonometry Page 88/91