Q. 11

# Find the equation of a line passing through the origin and making an angle of 120^{0} with the positive direction of the x - axis.

Answer :

As angle is given so we have to find slope first give by m = tanθ

m = tan120°

)

(tan (180° - θ) is in II quadrant, tanx is negative)

Now equation of line passing through origin is given as y = mx

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