# If #z=tanalpha+itanbeta#, find the modulus and argument of #z#?

and

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The modulus of ( z ) is ( \sqrt{\tan^2(\alpha) + \tan^2(\beta)} ), and the argument of ( z ) is ( \arctan(\frac{\tan(\beta)}{\tan(\alpha)}) ).

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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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