Math  /  Geometry

QuestionSimplify 4x2\sqrt{4-x^{2}} using the substitution x=2sinθx=2 \sin \theta.

Studdy Solution
Since θ\theta is a real number, the absolute value can be removed, leaving the final simplified expression.
2cosθ2\cos \thetaThe simplified expression is 2cosθ2\cos \theta.

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