Question

In∆ abc and ∆ xyz,if angle A and angle X are acute angles.such that cos A= cos X . Show that angle A= angle X.

Answer 1

Answer:

Answer in the attachment...

Answer 2

Answer:

It is the same, because cos A = Cos X, and there can be only one value as cos for 1 Angle. Since it is given that both the values are equal, we can say that angle a = angle X