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Cos23-sin67/tan26•tan64 |
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Answer» Given : {COS(23°) - Sin(67°) }/ ( tan26 * tan64) To Find : Value Solution: {Cos(23°) - Sin(67°) }/ ( tan26° * tan64°) tan26° * tan64° = tan 26° * cot (90° - 64°) = tan 26° * cot (26°) =tan 26°/tan 26° = 1 Sin(67°) = Cos(90° - 67°) = Cos(23°) {Cos(23°) - Sin(67°) }/ ( tan26° * tan64°) = ( Cos(23°) - Cos(23°))/1 = 0/1 = 0 {Cos(23°) - Sin(67°) }/ ( tan26° * tan64°) = 0 Learn More: sin4x+sin3x+sin2x/cos4x+cos3x+cos2x Prove that: (sin3x+sinx)sinx+(cos3x-cosx) |
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