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December 19, 2014

December 19, 2014

Posted by **trig** on Sunday, November 30, 2008 at 5:08pm.

x=?

please and thank you! i'd appreciate it!

- lena -
**bobpursley**, Sunday, November 30, 2008 at 6:32pmdivide both sides by -cosx

tanx+1=0

x= arctan -1

x=-45 deg

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