The equations of the lines which pass through the point (3, –2) and are inclined at 60° to the line
is
Given equation is √3x + y = 1
and θ = 60°
Firstly, we find the slope of the given equation
√3x + y = 1
⇒ y = 1 - √3x
or y = (-√3)x + 1
Since, the above equation is in y = mx + b form.
So, the slope of this equation m1 = -√3
Let m2 be the slope of the required line.
Now, we find the value of m2, by using the formula
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Putting the values of m1 and m2 in above eq., we get

[∵ tan 60° = √3]

Taking (+) sign, we get

⇒ -√3 – m2 = √3(1 - √3m2)
⇒ -√3 – m2 = √3 - 3m2
⇒ 3m2 – m2 = √3 + √3
⇒ 2m2 = 2√3
⇒ m2 = √3
Taking (-) sign, we get

⇒ √3 + m2 = √3(1 - √3m2)
⇒ √3 + m2 = √3 - 3m2
⇒ 3m2 + m2 = 0
⇒ 4m2 = 0
⇒ m2 = 0
∴, Equation of line passing through (3, -2) with slope √3 is
y – y1 = m(x – x1)
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⇒ y + 2 = √3x – 3√3
⇒ √3x – y – 3√3 – 2 = 0
⇒ √3x – y – (3√3 + 2) = 0
and Equation of line passing through (3, -2) with slope 0 is
y – y1 = m(x – x1)
⇒y – (-2) = 0 (x – 3)
⇒ y + 2 = 0
Hence, the required equations are √3x – y – (3√3 + 2) = 0 and y + 2 = 0
Hence, the correct option is (a)
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