Simplify and select the equivalent expression II — task. Maths TNSB Mentoring, Class 10.

\(\frac{\cot β - \cos β}{\cot β + \cos β}\) \(=\)

\(\frac{\text{cosec}\: β - 1}{\text{cosec}\: β + 1}\)
\(\frac{\sec β - 1}{\sec β + 1}\)
\(\frac{\cos β - 1}{\cos β + 1}\)

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