Saved Bookmarks
| 1. |
if sin a, sin b, sin c are in A.P.and cos a, cos b, cos c are in G.P., then find the value of ((cos^2)a + (cos^2)b – 4 cosa cosb) / (1- sina sinb) |
| Answer» if sin a, sin b, sin c are in A.P.and cos a, cos b, cos c are in G.P., then find the value of ((cos^2)a + (cos^2)b – 4 cosa cosb) / (1- sina sinb) | |