TRIGONOMETRIC FUNCTIONS Expressions (Page 2 of 8)

The length of side c (the hypotenuse) can be calculated using the expression c = 4.032csc(29° 23'). Then, by the Pythagorean Theorem, we can calculate the length of side b as b = sqrt(8.218^2-4.032^2).

 4.032 SIN key. 29 2nd ANGLE key. 1: menu selection. 23 2nd ANGLE key. 2: menu selection. Right parenthesis key. x to the -1 key. ENTER key. Calculator screen image.
 2nd Square root key. 8.218 x-squared key. Minus key. 4.032 x-squared key. Right parenthesis key. ENTER key. Calculator screen image.

So, angle B measures 60° 37', side b is approximately 7.161 meters, and side c is approximately 8.218 meters.
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