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1 answer:
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Answer:
The correct option is C
Step-by-step explanation:
Given the circumference of circle which is 54 cm and also the measure of arc XY is 120°
we have to find the expression for arc length of XY
The arc length can be calculated by the formula
Hence, option C is correct
Since s and t are complimentary, that means ∠s + ∠t = 90
From the picture, we also know that ∠t + ∠LGM = 90
Set them equal to each other:
∠s + ∠t = ∠t + ∠LGM, solve:
∠s = ∠LGM
Now using the fact that tangent = opposite/adjacent:
tan (∠s) =
tan (∠s) =
Set them equal to each other to get:
=
Solve:
Part B:
Using tan (∠s) =
We get: meters
Hope that helps!