# A sailor was in a boat that was 250 feet from the bottom of a lighthouse. Looking at the top of the lighthouse, the angle of elevation is 60 degrees. How do you find the height of the lighthouse is the tangent of 60 degrees = 1.73?

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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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