alleryA right triangle has sides 1, √3 and 2. What is the cosine of the angle opposite side 1?
A1/2
B1/√2
C√3/2
D1
Answer & Solution
Correct answer: C. √3/2
The side adjacent to 30 degrees in a 30-60-90 triangle is √3/2 of the hypotenuse.
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