Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
Simplify \(\rm \sec^2 \alpha\left(1+\frac{1}{cosec\ \alpha}\right)\left(1-\frac{1}{cosec\ \alpha}\right)\)
1
sin2 α
2
1
3
-1
4
tan4 α