In a right triangle, the hypotenuse is units, and one leg is units. What is for the angle opposite the side of length ?
Options
A
B
C
D
Answer & Analysis
Answer
B
Analysis
The cosine of an angle is the ratio of the adjacent side to the hypotenuse. In this triangle:
The adjacent side (next to the angle) is ,
The hypotenuse is .
Thus:
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