Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

সরল করো  \(\rm \frac{\sin A}{1+\cos A}+\frac{1+\cos A}{\sin A}.\)

1
2 cosec A
2
sec A 
3
cosec এ
4
2 sec A 
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