Question

Prove the following trigonometric identity. (sec theta)/(tan theta)=(csc theta)
Calculation l Reason
1. l 1.
2. l 2.
3. l 3.

Answer 1

tanø=sinø/cosø We know, sinø=1/cosecø and cosø=1/secø It results that tanø=secø/cosecø Multiplying cosecø/tanø in both sides, we get the identity