What is the acute angle between the lines x-2=0 and 3 x-y-2=0?

NDA 2021 Mathematics question

What is the acute angle between the lines and ?

Answer: (B)

The line is vertical, so it makes an angle of 90° with the positive -axis. The line , i.e. , has slope , so it makes 60° with the

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Question ID VK-033553