Section 3'1 The Inverse Sine, Cosine and Tangent Functions

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Section 3.1 The Inverse Sine, Cosine and
Tangent Functions

• Continued

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Horizontal line test tan x is not one-to-one
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If we limit the domain of the tangent function to
be (p/2, p/2) we have a function that is
one-to-oneit will have an inverse.
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The inverse tangent of x
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Find the value in (p/2, p/2) whose tangent is
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Section 3.2 The Inverse Trigonometric Functions
Continued
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Remaining Inverse Trig Functions
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y
4
y
x
1
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y
We know
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x
1
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But we (most likely) do not have a sec button on
our calculator, so