InterviewSolution
Saved Bookmarks
| 1. |
If θ1, θ2, θ3........,θn are in A.P., whose common difference is d, then,sec θ1 sec θ2+sec θ2 sec θ3+..........+sec θn−1 sec θn= |
|
Answer» If θ1, θ2, θ3........,θn are in A.P., whose common difference is d, then, |
|