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Question

A line cuts off equal intercepts on the co-ordinate axes. The angle made by this line with the positive direction of X-axis is
  1. 135 
  2. 90  
  3. 120 
  4. 45 


Solution

The correct option is A 135 
Equation of a straight line in intercept form is xa+xb=1
Given, a=b
xa+xa=1 
x+y=a
Comparing it with general equation of the line y=mx+c, we get
slope, m=1=tanθ
θ=135

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