state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If A is an acute angle, then \( \sqrt{\frac{1 - \cos A}{1 + \cos A}} + \sqrt{\frac{1 + \cos A}{1 - \cos A}} \quad\)is equal to
1
2 cosec A
2
2 cos A
3
2 sec A
4
2 sin A
5
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