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If ∣∣∣asin2θ+bsinθ cosθ+c cos2θ−12(a+c)∣∣∣≤12k, then k2 is equal to |
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Answer» If ∣∣∣asin2θ+bsinθ cosθ+c cos2θ−12(a+c)∣∣∣≤12k, then k2 is equal to |
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