Question

find the value of x .

2 cos 3x =1​

Answer 1

2cos3x=1

cos 3x =1/2

cos 3x =cos 60 (because cos 60=1/2)

3x=60

x=20

therefore the value of x is 20.

Answer 2

Answer:

x=20

Step-by-step explanation:

2cos3x=1

therefore, cos3x=1/2

(cos60=1/2)

therefore, cos3x=cos60

3x=60

x=60/3

therefore, x=20...

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