Angles Between Vectors Check 4.28.23

Find the dot product of the given vectors: <-7,-9> and <8,4>

• 95

• 0

• -92

• -120

What is the answer when you take dot product between two vectors?

• a vector

• a scalar

• a vector and scalar

• nothing

Find the dot product of i - 2j and 3i + 2j.

• 1

• <3, -4>

• <4, 0>

• -1

How do you know if two vectors are orthogonal?

• Their sum is 0.
• The dot product is 1.
• The angle between them is 0°.
• The dot product is 0.

Given vectors u = <-7, 3> and v = <9, 1>

Find the dot product

For what value of x will the two vectors be orthogonal?

<x, -3> and <4, 8>