Solution
Expression : $$cosec2A + cot2A$$
= $$\frac{1}{sin2A}+\frac{cos2A}{sin2A}$$
= $$\frac{1+cos2A}{sin2A}$$
= $$\frac{1+(2cos^2A-1)}{2sinAcosA}$$
= $$\frac{2cos^2A}{2sinAcosA}$$
= $$\frac{cosA}{sinA}=cotA$$
=> Ans - (C)
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
