SinA+B - sinAcosB+cosAsinB, cosA+B - cosAcosB-sinAsinB, cosA-B - cosAcosB+sinAsinB, sinA-B - -cosAsinB+sinAcosB, sin2A - 2sinAcosA, sinA - akar(1-cos2A), cos4A - akar(1-sin24A),

Rumus trigonometri

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