Question

prove that
1+cosA/1-cosA=(cosecA+cotA)²​

Answer 1

Step-by-step explanation:

1. 1+cosA/1-cosA × 1+cosA/1+cosA
2. (1+cosA)^2 / 1^2-cos^2A
3. (1+cosA)^2 / sinA
4. (1+cosA / sinA)^2
5. (1/sinA + cosA/sinA)^2
6. (cosecA+cotA)^2