Teaching Bihar D.El.Ed Mock Test Series 2024-25 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

যদি cot Ø = \(b\over a\) হয়, তাহলে  \(cosØ+sinØ\over {cosØ-sinØ}\) -এর মান হল:

1
(b+a)/(b-a)
2
(a+b/a-b)
3
(b-a)/b+a)
4
(a-b)/(a+b)
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