INVERSE TRIG FUNCTIONS Expressions (Page 4 of 8)

As a second Law of Sines example, let's evaluate the expression arcsin(12.5sin(47.7deg)/8.5).

 CLEAR key.

 2nd inverse sine key. 12.5 SIN key. 47.7 Right parenthesis key. Divide key. 8.5
 Right parenthesis key. ENTER key.

 Calculator screen image. Calculator screen image.

In this case the argument to the arcsine function is larger than one, and therefore outside the domain. It is impossible to construct a triangle with the given conditions! Press 1: to quit.
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