TRIGONOMETRIC FUNCTIONS Expressions (Page 5 of 8)

The following two examples are expressions which might occur in applied problems involving right triangles or vectors. For instance, let's evaluate the expression
                                                                  (21.3tan(67deg))/(tan(25deg)+tan(67deg)).
Because the denominator contains more than one term, it must be included within additional parentheses.

 CLEAR key.

 21.3 TAN key. 67 Right parenthesis key. Divide key. Left parenthesis key. TAN key. 25 Right parenthesis key. Plus key.
 TAN key. 67 Right parenthesis key. Right parenthesis key. ENTER key.

 Calculator screen image.
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