If triangle ABC is right angled at A and AB = AC then find the value of angle B and angle C.
In a triangle ABC, right angled at A, AB = AC. Find the value of angle B and angle C.
In a Δ ABC, let ∠ C = π/2 .If r is the inradius and R is the circumradius of the triangle, then 2 (r +R) is equal to