# What is the equation of the line tangent to # f(x)=xsecx # at # x=pi/3#?

The equation is

We have

We now locate the derivative.

Thus, the line's equation is as follows:

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The equation of the line tangent to f(x)=xsecx at x=pi/3 is y = (pi/3)sec(pi/3) + (x - pi/3)tan(pi/3).

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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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