Question

if angle A and angle B are acute angles such that cos A = cos B then show that angle A = angle B​

Answer 1

Hello

koustubhraj08

How are you?

Answer 2

Step-by-step explanation:

1. if ABC is right angled triangle then cos a =ac/ab
2. cosb =bc / ab
3. but cos a is equal to cos b
4. ac/ab =bc/ab
5. therefore ac=bc ...
6. when two sides of triamgle are equal then opp angles are also equal ..
7. therefore angle a=angle b