In Δ ABC if ∠A = ∠B, then
AC = BC
AC ≠ BC
AB = BC
AB = AC
If two angles of a triangle are equal, then the sides opposite these angles are equal.
Hence, AC = BC
In ΔABC≅ ΔACB, then ΔABC is isosceles with
In Δ ABC, right angled at B, expressions for sec C and cosec C is