determine t so it is at coplanar

[wine]

please help me with this question
determine t so that a(vector)=(2,-1,1) b(vector)=(1,2,-3) c(vector)=(3,t,5) are coplanar
i only understand coplanar is that those point is at the same plane but i do not know how should i do this question. thank you.

 

[Deleted member 4993]

please help me with this question
determine t so that a(vector)=(2,-1,1) b(vector)=(1,2,-3) c(vector)=(3,t,5) are coplanar
i only understand coplanar is that those point is at the same plane but i do not know how should i do this question. thank you.

Coplanar vectors will have the same "normal" (to the plane).

 

[pka]

please help me with this question
determine t so that a(vector)=(2,-1,1) b(vector)=(1,2,-3) c(vector)=(3,t,5) are coplanar
i only understand coplanar is that those point is at the same plane but i do not know how should i do this question. thank you.

Can you find a value of \(\displaystyle t\) such that \(\displaystyle \overrightarrow {c}\cdot\left(\overrightarrow {a}\times\overrightarrow {b}\right)=0~? \)