other govt exam NBE Junior Assistant 2024 Mock Tests Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
Simplify the given equation (1 + tan2 A)(1 + cot2 A) =?
1
\(\rm \frac{1}{\cos ^2A(1+\sin^2A)}\)
2
\(\rm \frac{1}{\sin ^2A(1-\sin^2A)}\)
3
\(\rm \frac{1}{\sin ^2A+cosec^2A}\)
4
\(\rm \frac{1}{\sin ^2A(1+\cos^2A)}\)