if Straight lines , ax+by+p=0 and xcos(m)+ysin(m)=p enclose an angle of 45degree and the line xsin(m)=ycos(m)meet them at the same point . then find the value of a^2+b^2

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TopNewestPoint of intersection of the three straight lines comes to pCosm,pSinm.Plugging this into first equation gives one equation.Now the slopes of the 2nd and 3rd lines are known as also the angle between them,45 degrees.This gives another equation.Solving these two and eliminating m gives a^2+b^2=2. – Adarsh Kumar · 2 years ago

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– Avn Bha · 2 years ago

yes you are correct the answer is 2Log in to reply

is the answer 2? – Adarsh Kumar · 2 years ago

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– Avn Bha · 2 years ago

i dont know could you tell how you did itLog in to reply