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The acute angle between the lines x - y = 0 and y = 0 is 45 (a) (c) (b) (d) 30 75 60
The acute angle between the lines x - y = 0 and y = 0 is 45 (A) (C) (B) (D) 30 75 60
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Abhijeet Gaurav Best Answer
Line y= 0 is X- axis & slope of this line is equal to 0 (m1). Line x-y= 0 is x = y which is passing through (0,0). Slope of this line is 45° (m2). Now applyi g the formula , tan Φ = (m2 - m1) / (1- m1m2) = (1-0) / ( 1- 1*0) = 1/ 1 = 1 tan Φ = 1 So, Φ = 45° So, Answer is (B).
what did u take m2 as 45 or 1?