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At what points on the curve y = sin x + cos x, 0 ≤ x ≤ 2π, is the tangent line horizontal?
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Dhanalakshmi
May 29, 2019, 6:31am
1
At what points on the curve y = sin x + cos x, 0 ≤ x ≤ 2π, is the tangent line horizontal?