Posted by maria on Wednesday, July 13, 2011 at 9:18am.
Verify that each trigonometric equation is an identity tan^2+1/sec Î± =sec Î±

algebra/trignometry  Reiny, Wednesday, July 13, 2011 at 9:35am
Please check with your previous post before reposting the same question.
http://www.jiskha.com/display.cgi?id=1310559328 
algebra/trignometry  kathy, Wednesday, July 13, 2011 at 9:54am
x=16 ,y=17 when x squared 4y squared