Saved Bookmarks
| 1. |
If `A, B, C, D` be the angles of a quadrilateral, prove that : `(tanA+tanB+tanC+tanD)/(cotA+cotB+cotC+cotD) = tan A tan B tan C tan D`A. tan A tan B tan C tan DB. cot A cot B cot C cot DC. `tan^(2)A + tan^(2)B + tan^(2)C + tan^(2)D`D. `sum tan A tan B tanC` |
| Answer» Correct Answer - A | |