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sin ( ar ct an ) (2))?
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Explanation & Answer
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θ = arctan(2)
tan(θ) = 2 = 2/1
Draw right triangle with side opposite θ = 2, and side adjacent to θ = 1
Then hypotenuse = √(2²+1²) = √5
sin(arctan(2)) = sin(θ)
. . . . . . . . . . . . = opposite/hypotenuse
. . . . . . . . . . . . = 2/√5 or 0.8944
Wnzrf Z745
(608)
Rice University
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