\
The angle is
.
\
Convert the angle into radians :
\
\
Substitute
.
\
\
radians.
\
\
The angle is
radians.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f4d62c7dab27605ae499fad32be79783.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8c808a33d74ab9dc9045a4bdfbcf1dd4.png\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2881647d7051aae343b693d93c515895.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=958647ac3de98c4785a8c555927667a7.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d3a0f07d02e0d930dba2ccb80b076b7a.png\")
radians.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1844af5a610e90cd3cb9505b95e4c488.png\")
radians.