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Co-ordinate Geometry

By Notes Vandar

Equation of straight line in slope intercepts form:

Let P(x, y) be the any point line AB which makes a positive angle θ with x-axis.

From figure

∠ ACD= ∠ABE = θ

Slope of line AB = tanθ = m

PD = y- c

CD = OE =x

Angle betweenlines y = m1x+ c2andy =mx+ c1

 

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