INVERSE TRIG FUNCTIONS Basic Graphs (Page 11 of 13)

To evaluate an inverse trigonometric function from the graph, use the CALC value feature. Just be sure to specify a domain value that is valid and within the current WINDOW settings.

For example, let's evaluate arcsec(2).

 2nd CALC key. 1: menu selection. 2 ENTER key. Calculator screen image.

The value shown, 1.0471976, is an approximation of π/3 which is the exact value.
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