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February 24th, 2013, 07:51 PM  #1 
Senior Member Joined: Aug 2012 From: South Carolina Posts: 866 Thanks: 0  Last problem of the week
says to verify using reciprocals and pythagorean identities 7cota/csca1 = 7csca+7/cota this is the last one I need assistance with and thanks so much to Mark,Greg,Soroban and now mathman!!! Thank You so much! 
February 24th, 2013, 08:04 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: Last problem of the week
Start with the left side. 1.) Multiply by 2.) Multiply by 3.) Apply Pythagorean identity to denominator. 4.) Reduce, then split into sum and use and . 
February 24th, 2013, 08:20 PM  #3  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 408  Re: Last problem of the week Hello, mathkid! Quote: [color=beige]. . . . . . . . . . . . . . . . [/color]  

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