1 - Straight lines Questions Answers

show that line perpendicular to x-axis and a line perpendecular to y-axis having slope multipication  -1

Asked By: HARISH
is this question helpfull: 13 1 submit your answer
Joshi sir comment

Angle between two lines is given by the formula

tanθ = (m1-m2)/(1+m1m2)

solve this by taking θ = 90

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