In this figure, AB || CD and mZ3 = 120°. What is mZ6? (Look at picture”
1 answer:
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which is one hour and 25 minutes.
The cross product of two vectors gives a third vector 
that is orthogonal to the first two.
Normalize this vector by dividing it by its norm:
To get another vector orthogonal to the first two, you can just change the sign and use
.
Normalize this vector by dividing it by its norm:
To get another vector orthogonal to the first two, you can just change the sign and use