Review of inverse trig functions

1. Looking back on
inverse trig funct
ions
www.blakeyart.com/lookingback.jpg
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2. Calculus Group Members ________________________
Section 4.5B: Derivatives of Inverse Trigonometric Functions Date ______________
Review: Inverse Trigonometric Functions
1. Label the graph of each trig function, then state its domain and range.
2. Since the trig functions are all periodic graphs, none of them pass the __________________ _________ test.
Therefore none of these are _________________ functions or ___ to ___ functions,. and so do not have
inverses which are functions.
Rather these are called inverse trig _________________.
Sketch (dashed line type) the graph of the inverse relation for each trigonometric function.
[On TI­83/84, with function in Y1: à Draw à 8:DrawInv]
3. In order to create inverses which are functions, we must restrict the _____________ of each of the functions
so that they are 1­1.
This corresponds to considering only a particular __________ of the Unit Circle. (See figure)
The notation for inverse the trig function is y = ______________.
The portion of the graph used for the inverse function is called the ______________ _________.
On the sketch of the inverse trig relation, darken (solid line type) the principle branch of the
inverse trigonometric function, then state its domain and range.
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3. [­1, 1]
[­1, 1]
[­1, 1]
[­1, 1]
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4. except
Domain: _______________________
Range: ________________________
[to graph on TI: cos­1(1/x)]
except
Domain: _______________________
Range: ________________________
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5. [to graph on TI: sin­1(1/x)]
Domain: _______________________
Range: ________________________
[to graph on TI: π/2 ­ tan­1(x)]
Domain: _______________________
Range: ________________________
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