Question

3-The value of A if 2 Cos A-1 = 0 is​

Answer 1

Answer:

2 cos A = 1

⇒ cos A 1 =1/2

= cos A = 1/2

⇒ cos A = cos60°

⇒ A =60°

hope it helps!!! :D

Answer 2

Answer:

A=60°

Step-by-step explanation:

2cosA-1=0

2cosA=1

cosA=1/2

A=cos^-1(1/2)

A=60