Answer and Explanation
Your Answer is
Correct Answer is E
Explanation
The angle corresponding to the hypotenuse in a triangle is 180°-50°=130°. According to the cosine law, the side length formula is E
47. The figure below shows a map of Jennifer's neighborhood.
Which of the following expressions represents the straight-line distance, in miles, from Jennifer's home to school?
(Note: For a triangle with sides of length a, b, and c that are opposite angles ∠A, ∠B, and ∠C respectively, 
, and c2 = a2 + b2 - 2ab cos ∠C.)