state gov TSPSC Forest Beat Officer (ఫారెస్ట్ బీట్ ఆఫీసర్) Mock Test 2023 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
\({\tan A \over {1-\cot A}} + {\cot A \over {1 - \tan A}}\) এর মান কত?
1
sec A cosec A + 1
2
cosec A cos A + 1
3
sec A sin A + 1
4
sec A cosec A - 1