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प्रश्न
What is the value of (1 − cos2 θ) cosec2 θ?
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उत्तर
We have,
`(1-cos^2 θ) cosec ^2 θ=sin^2θ xx cosec^2 θ`
=` sin^2θ xx(1/sin θ)^2`
= `sin^2 θ xx1/( sin^2θ)`
`= 1`
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