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01-09-2017
Mathematics

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Simplify the expression 16 − x2 as much as possible after substituting 4 sin θ for x. (assume 0° < θ < 90°.)

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10-09-2017

16 - (4*sinθ)^2
16 - 16*sinθ^2
16(1 - sinθ^2)
16*cosθ^2

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