Question

find the value of x if 2 cos 3x - 1 = 0​

Answer 1

Answer:

x=20°

Explanation:

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Answer 2

Answer:

x = 20°

Explanation:

2 cos 3x -1 = 0

2 cos 3x = 1

cos 3x = 1/2

3x = cos-¹(1/2)

3x = 60°

x = 20°