Question

3.
Verify cos 3A = 4 cos A-3cos A, when A= 30°​

Answer 1

Step-by-step explanation:

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=MAA CHUDA

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=MAA CHUDA

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=

If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=If A,B are acute angles,sinA=4/5,tanB=5/12,then cos(A-B)=MAA CHUDA