CUET Preparation Today
CUET
General Test
Quantitative Reasoning
Trigonometry
cot2A – cos2A is equal to:
cos2A . sin2A
cos2A . cot2A
1
0
cot2A – cos2A
= $\frac{cos^2A}{sin^2A}$ - cos²A
= $\frac{cos^2A(1 - sin^2A)}{sin^2A}$
= $\frac{cos^2A.cos^2A}{sin^2A}$
= cos2A . cot2A
