If from a point `P(a ,b ,c)` perpendiculars `P Aa n dP B` are drawn to `Y Za n dZ X-p l a n e s` find the vectors equation of the plane `O A Bdot`

If from a point P(a ,b ,c) prpendiculars P Aa n dP B are drawn to y za n dz x-p l a n e s , find the eqution of th plane O A Bdot

From the point P(a ,b ,c), let perpendicualars P La n dP M be drawn to Y O Za n dZ O X planes, respectively. Then the equation of the plane O L M is a. x/a+y/b+z/c=0 b. x/a+y/b-z/c=0 c. x/a-y/b-z/c=0 d. x/a-y/b+z/c=0

From the point P(a ,b ,c), let perpendicualars P La n dP M be drawn to Y O Za n dZ O X planes, respectively. Then the equation of the plane O L M is a. x/a+y/b+z/c=0 b. x/a+y/b-z/c=0 c. x/a-y/b-z/c=0 d. x/a-y/b+z/c=0

Tangents P Aa n dP B are drawn to x^2+y^2=a^2 from the point P(x_1, y_1)dot Then find the equation of the circumcircle of triangle P A Bdot

Mutually perpendicular tangents T Aa n dT B are drawn to y^2=4a x . Then find the minimum length of A Bdot

Mutually perpendicular tangents T Aa n dT B are drawn to y^2=4a x . Then find the minimum length of A Bdot

Write all the unit vectors in X Y-p l a n edot

Write all the unit vectors in X Y-p l a n edot

If from a point P , tangents P Qa n dP R are drawn to the ellipse (x^2)/2+y^2=1 so that the equation of Q R is x+3y=1, then find the coordinates of Pdot

From a point O inside a triangle A B C , perpendiculars O D ,O Ea n dOf are drawn to rthe sides B C ,C Aa n dA B , respecrtively. Prove that the perpendiculars from A ,B ,a n dC to the sides E F ,F Da n dD E are concurrent.