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STD 11 - 9. straight line — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 9. straight line4 Marks
MCQ
A straight line $(\sqrt 3 - 1)x = (\sqrt 3 + 1)y$ makes an angle ${75^o}$with another straight line which passes through origin. Then the equation of the line is
  • ✓
    $x = 0$
  • B
    $y = 0$
  • C
    $x + y = 0$
  • D
    $x - y = 0$
✓

Answer

Correct option: A.
$x = 0$
a
(a)We know that $\frac{{\sqrt 3 + 1}}{{\sqrt 3 - 1}} = \tan {75^o}$
Hence the line makes an angle of ${75^o}$with y- axis, so the equation of y-axis is $x = 0$.

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