If \sqrt{\frac{1−\cos\theta }{1\: + \:\cos\theta }} \times \sqrt{\frac{cosec\theta −\cot\theta }{cosec\theta \: + \:\cot\theta }} = \frac{1−r}{1\: + \:r} , then the value of r is:

SSC CHSL 3 July 2019 Shift 2 Paper

Question : 67 of 100

Marks: +1, -0

√{\;{1−cosθ\;}/{1\:\;+\;\:cosθ\;}} × √{\;{cosecθ\;−cotθ\;}/{cosecθ\;\:\;+\;\:cotθ\;}}

\;{1−r}/{1\:\;+\;\:r}

, then the value of r is:

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