What Value of a Makes Vectors Coplanar?

[BlueRope]

Homework Statement

vector a = (0,1,0)
vector b = (-2,1,1)
vector c = (1, a-2, a+2)

for what value of a are the three vectors coplanar?

Homework Equations

don't know how to do this

The Attempt at a Solution

didn't try anything

 

[fauboca]

Homework Statement

vector a = (0,1,0)
vector b = (-2,1,1)
vector c = (1, a-2, a+2)

for what value of a are the three vectors coplanar?

Homework Equations

don't know how to do this

The Attempt at a Solution

didn't try anything

If a is a parameter, you shouldn't name the vector a as well.

Have you read the definition coplanar?

 

[intwo]

Well let's start at the fundamental level.

Do you know what coplanar means?

 

[SammyS]

After looking at the title of this thread ... I can think of two ways.

 

[BlueRope]

What are those two ways?

 

[Mark44]

Locking the thread, because the OP has not shown any effort at solving this problem.