the point P is the foot of the perpendicular from A(0,t) to the line whose equation is y=tx. Determine

a) the equation of line AP

b) the co-ordinate of P

c) the area of triangle OAP, where O is origin

The given equation is tx-y=0

Coordinates of foot satisfy

 t(0+λt) - (t-λ)=0

t(λt) - t+λ=0


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