InterviewSolution
Saved Bookmarks
| 1. |
Evaluate (cosec^2 θ – cot^2 θ)^2 . (cosec θ + cot θ)^2.(a) 1(b) 0(c) (cosec^2 θ – cot^2 θ)^2(d) (cosec θ + cot θ)^2I had been asked this question in final exam.My question comes from Trigonometric Identities topic in chapter Trigonometry of Mathematics – Class 10 |
|
Answer» RIGHT choice is (d) (COSEC θ + COT θ)^2 Best explanation: (cosec^2 θ – cot^2 θ)^2 . (cosec θ + cot θ)^2 = 1 (cosec θ + cot θ)^2 = (cosec θ + cot θ)^2 |
|