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Find angle between 5x+2y-11=0 and 3x-y+11=0

Your problem `->` angle between 5x+2y-11=0 and 3x-y+11=0

We shall first of all find slopes of the lines.
Slope of line-1

`:. 2y=-5x+11`

`:. y=-(5x)/(2)+11/2`

`:. m_1=-5/2`

Slope of line-2

`:. y=3x+11`

`:. m_2=3`

Now, `tan theta = |(m_1-m_2)/(1+m_1m_2)|`






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