Trigonometry by Mark Saul & I. M. Gelfand

Author:Mark Saul & I. M. Gelfand
Language: eng
Format: epub
Publisher: Springer-Verlag Wien 2012
Published: 2014-06-02T00:00:00+00:00

4 Radian measure and calculators

Most calculators, and all scientific calculators, know about radian measure. You can switch your calculator between “degree mode” and “radian mode” (and sometimes there are still other ways to measure angles). But each calculator does this in a different way. It is important that you know how to tell which mode your calculator is working in, and also how to switch from one mode to another.

Exercise

1. A student asked his calculator for the sin of 1. The answer was 0.8414709848079. Was the calculator in radian mode or in degree mode?

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