# Sec #theta# -1#-:#sec #theta# =?

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I understand sign conversions, but I think it should be one, sine 1/cos and -1/1/cos would subtract to 1? but my options are 1+cos, -2tan^2 sec csc, sin tan. With thetas respectively.

I understand sign conversions, but I think it should be one, sine 1/cos and -1/1/cos would subtract to 1? but my options are 1+cos, -2tan^2 sec csc, sin tan. With thetas respectively.

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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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