In a right triangle, the hypotenuse is 10 units long. If the cosine of one of the acute angles is 0.6, what is the length of the adjacent side to this angle?
Options
A
4
B
6
C
8
D
10
Answer & Analysis
Answer
B
Analysis
We know that cosine of an angle = adjacent side / hypotenuse.
Given cosine = 0.6 and hypotenuse = 10.
Let the adjacent side be .
So,
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