Question

how to do this sum please help me

Answer 1

cosec squared theta is equal to one upon sin squared theta and sec squared theta is equal to one upon cos square theta . taking LCM on both side we will get sin square theta + cos square theta upon sin square theta into cos square theta that is one upon sin square theta into cos square theta and it will become causes square theta into sec squared theta

Answer 2

cosec square theta is equal to one upon sin square theta nd sec square is equal to 1 /cos square theta and then take the LCM then cos2 ➕ sin2 upon sin2. cos2 nd cos2 ➕ sin 2 is equal to 1 and after that 1 upon sin2. cos2 is equal to cosec2.sec2