Q90 / 160 · TS EAMCET 2021 (04 Aug Shift 2) · Mathematics

The angle between the pair of straight lines $3 y^{2} - 8 x y - 3 x^{2} - 29 x + 3 y - 18 = 0$ is

Correct answer
A
$90 °$
B
$35 °$
C
$45 °$
D
$30 °$

Solution

Given equaition of pair of straight line is
$3 x^{2} - 8 x y - 3 y^{2} - 29 x + 3 y - 18 = 0$
clearly, here,
co-efficient of $x^{2} +$ coeffecient of $y^{2} = 0$
$∴$ Given pair of straight lines are perpendicular to each other.
$∴$ Angle between pair of straight lines is $90 °$

Hence, the correct answer is option: 'A'.

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The angle between the pair of straight lines 3y2-8xy-3x2-29x+3y-18=0 is

Solution

Relevant Questions

The angle between the pair of straight lines $3 y^{2} - 8 x y - 3 x^{2} - 29 x + 3 y - 18 = 0$ is