Four points are always coplanar if check all that apply a they lie on different lines b they lie in the same place c they lie collinear d they on different planes

Hey there,

Your question states: Four points are always coplanar if . . .

Your correct answer from the questions above would be they lie in the same place 

The definition of the word  means : In the same place.

So . .Four points are always coplanar if they lie in the same place.

Hope this helps many.

~Jurgen

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.