ISEE Word Problems Question 296: Answer and Explanation
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Question: 296
15. Triangle LNM is shown. The measure of angle LNM is 50°, and the length of MN is 5 cm.
Side length 
is equal to which one of the following expressions?
- A. 5 tan 50°
- B. 5 sin 40°
- C.
- D.
Correct Answer: A
Explanation:
A
Use SohCahToa. As is OPPOSITE TO the given angle, and 
is ADJACENT TO the given angle, use tangent: tan 50° = 
. Multiply both sides by 5: 5 tan 50° = .