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geom3d

  

TangentPlane

  

find the tangent plane of a point on a sphere

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

TangentPlane(p, A, s)

Parameters

p

-

name

A

-

point

s

-

sphere

Description

• 

Let A be a point on the sphere s, the routine returns the tangent plane p of s at A.

• 

For more details on the tangent plane, use detail.

• 

The command with(geom3d,TangentPlane) allows the use of the abbreviated form of this command.

Examples

withgeom3d:

Define a sphere center (0,0,1), radius 1

spheres,pointo,0,0,1,1

s

(1)

Let A be the south pole of s. Find the tangent plane at A

pointA,0,0,0

A

(2)

TangentPlanep,A,s

p

(3)

detailp

Warning, assuming that the names of the axes are _x, _y and _z

name of the objectpform of the objectplane3dequation of the plane_z=0

(4)

See Also

geom3d[IsTangent]

 


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