![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
(a)
\The trigonometric function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=57528df22d89ad3c2a89b18422b5213c.png\")
.
Using calculator
\Function Mode Calculator Keystrokes Display
\![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=57528df22d89ad3c2a89b18422b5213c.png\")
Degree ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=79947b1ac78dcf0ce572bb3685ed6e4a.png\")
0.2815
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
(b)
\The trigonometric function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d75641ec2f830ee154f8ac5ef15ae93.png\")
.
Using calculator
\Function Mode Calculator Keystrokes Display
\![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d75641ec2f830ee154f8ac5ef15ae93.png\")
Degree ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3180d74a7b1689a8fad63509408aca13.png\")
3.5523![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
(a) The value of is 0.2815.
(b) The value of is 3.5523.