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प्रश्न
Evaluate the following:
`\text(cosec)^-1(\text{cosec} pi/4)`
उत्तर
We know that
cosec-1 (cosec θ) = θ, [-π/2,0) ∪ (0,π/2]
`\text(cosec)^-1(\text{cosec}pi/4)=pi/4`
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