Let `z_1,z_2 ` and origin be the vertices A,B,O respectively of an isosceles triangle OAB, where
Channel: Doubtnut
Date: 2020-04-12

Let `z_1,z_2 ` and origin be the vertices A,B,O respectively of an isosceles triangle OAB, where OA=OB and `/_AOB=2theta. If z_1, z_2` are the roots of equation `z^2+z+9=0` then `sec^2theta=`