If is an acute angle between the lines Kx^2 - 4xy + y^2 = 0 and = 1 2 , then value of K is

MHT CET 2022 Mathematics question

If is an acute angle between the lines and , then value of K is

Answer: (C)

For the pair the acute angle satisfies . Here , , . So , i.e. . Squaring, 1)^2K^2$ + 18K - 63 = 0

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-096000