cos(x) + 2sin2(x) + 4sin^2(x)

sin(2θ)=2sin(θ)cos(θ) PROOF

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cos(2θ)=(cos(θ))^2-(sin(θ))^2 PROOF

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sin(A-B)=sin(A)cos(B)-cos(A)sin(B) proof - GEOMETRICAL PROOF

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Some Basic Trigonometric equations whose functions are Quadrantle angles

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Question No. 8

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44-2Peter110_1_48_11