If cot θ = a/b, then find \frac{\cos ⁡\theta \:−\:\sin\theta }{\cos ⁡\theta \: + \:\:\sin\theta }

Correct Answer is : (a – b)/(a + b)

RRB JE Stage I Exam 25 May 2019 Shift 1

Question : 44 of 100

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If cot θ = a/b, then find

\;{\cos\;⁡θ\;\:−\:sinθ\;}/{\cos\;⁡θ\;\:\;+\;\:\:sinθ\;}

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