ag-gipp/GoUldI

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data/mathematical/138.mml

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<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><msup><mi>cos</mi> <mn>2</mn></msup><mo stretchy="false">(</mo><mi>u</mi><mo stretchy="false">)</mo><mo>−</mo><msup><mi>cos</mi> <mn>2</mn></msup><mo stretchy="false">(</mo><mi>v</mi><mo stretchy="false">)</mo><mo>=</mo><mo>−</mo><mi>sin</mi><mo stretchy="false">(</mo><mi>u</mi><mo>+</mo><mi>v</mi><mo stretchy="false">)</mo><mi>sin</mi><mo stretchy="false">(</mo><mi>u</mi><mo>−</mo><mi>v</mi><mo stretchy="false">)</mo></mrow><annotation encoding='application/x-tex'>\cos^2(u) - \cos^2(v) = -\sin(u+v) \sin(u-v)</annotation></semantics></math>