Answers

2014-06-10T16:11:12+05:30
Line y = 0  is X-axis slope of this line = 0 = m1 
line x-y = 0 is y = x which is passes through (0,0)  slope of this line = 45 = m2
tanФ = (m2-m1)/(1-m1m2) = (1-0)/(1-1*0)
        = 1/1 = 1
tanФ =1 
Ф = 45


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