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Cosec(-750°) find the value of this trigonometry

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cosec(-750°) = 2


cosec(-750°) = -cosec750°     as [cosec(-θ) = -cosec θ]

As, (750°= 4x180° + 30°)

- cosec750° = - cosec(4π+30°)

-(-cosec30°) = cosec30° = 2

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