\(\left( {{{\tan }^2}\theta + {{\cot }^2}\theta + 2} \right) \div \left( {\frac{1}{{1 + \cos \theta }} + \frac{1}{{1 - \cos \theta }}} \right)\)), 0° < θ < 90° యొక్క విలువ:
1
\(\frac{{cose{c^2}\theta }}{2}\)
2
2cosec2θ
3
\(\frac{{se{c^2}\theta }}{2}\)
4
2sec2θ