Which expression is equivalent to cos 120°?
1 answer:
Answer:
cos 120° = -1/2
Step-by-step explanation:
cos 120° = (adjacent side) / (hypotenuse.
Here the adjacent side (the side next to the central angle in this 30-60-90 triangle) is -1. Then the hypotenuse is 2 and the opposite side is √3.
Thus, cos 120° = -1/2
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Step-by-step explanation:
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Answer:
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The radius is 1.703......
Answer:
Area of square = 289r²
Step-by-step explanation:
Given:
Side of square = 17r
Find:
Area of square
Computation:
Area of square = side²
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