In an isoceles triangle ABC, AB = AC and `angleBAC=90^(@)`, the bisector of `angleBAC` intersects
Channel: Doubtnut
Date: 2020-05-10

In an isoceles triangle ABC, AB = AC and `angleBAC=90^(@)`, the bisector of `angleBAC` intersects the side BC at the point D. Prove that  `(sec angleACD)/(sin angleCAD)="cosec"^(2)angleCAD.`