In a `/_\ABC`, `ABbotBC` and `AD^2=BDxxCD`, prove that `/_\ABC` is a right-angled triangle.

In a DeltaABC , AD bot BC and AD^2=BD times CD , prove that DeltaABC is an right angled Triangle.

In a /_\ABC if a^(2)+b^(2)+c^(2)=8R^(2) then show that /_\ABC is a right angled triangle.

In /_\ABC , AD is the perpendicular bisector of BC. Show that /_\ABC is an isosceles triangle in which AB=AC.

In Delta ABC, if sin A cos B=1//4 and 3 tan A=tan B , the triangle is right angled at

In Delta ABC , if 2R= r_1-r then angle A=