The expression is .
(Apply Pythagorean identity: )
(Apply reciprocal identity: ) \ \
The simplified expression value is .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=70d55e4fb4159a5e30ee0673ac8aae9c.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=388c4e15ec79a7ffb47bb695748eb74f.png\")
(Apply Pythagorean identity: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c861b17a44efaf1c09427eed96b5feab.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=36b784f70c365b46819e38ea23fa3011.png\")
(Apply reciprocal identity: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=30d8e8170a35acd6287eee90ccbda199.png\")
) \ \
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ca0709eddcfae01956fab6ddd2dd4c7a.png\")
.