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February 24th, 2013, 07:51 PM   #1
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Last problem of the week

says to verify using reciprocals and pythagorean identities


7cota/csca-1 = 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!
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February 24th, 2013, 08:04 PM   #2
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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 .
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February 24th, 2013, 08:20 PM   #3
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Re: Last problem of the week

Hello, mathkid!

Quote:





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