# If #A = <6 ,4 ,-7 >#, #B = <3 ,-1 ,0 ># and #C=A-B#, what is the angle between A and C?

The angle is

Let's start by calculating

The dot product is

So,

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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