x2+y2+z2+5x−7y+2z−8=
(x+25)2+(y−27)2+(z+1)2=255
This is sphere with center C(−25,27,−1) and radius 255.
Find the equation of the tangent plane to the sphere at the point P(−3,5,4).
The radius vector or normal is CP=⎝⎛−0.51.55⎠⎞.
A vector in the plane we seek is v=⎝⎛x+3y−5z−4⎠⎞.
So, ⎝⎛−0.51.55⎠⎞∗⎝⎛x+3y−5z−4⎠⎞=0⇒
−0.5(x+3)+1.5(y−5)+5(z−4)=0.
Answer:
The equation of the tangent plane is
1.5y−0.5x+5z−29=0.
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Comments
Dear Anshika, thank you for leaving a feedback.
I had wrote there to find equation of tangent line not tangent plane and I also had not understand that how u find -0.5,1.5,5 Very confused. .