This question has been taken from the Book- ML Aggarwal
Board- ICSE
Publication- Avichal
Chapter- Trigonometric Identities
Chapter number-18
(i) (1 + cosec A)/ cosec A = cos2 A/ (1 – sin A) (ii) root{(1-cosA/(1+cosA)} =sinA/(1+cosA)
Trigonometric Identities, class 10th, chapter 18th, question no 22 , ICSE board, ML aggarwal..
Solution: