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April 17, 2015

April 17, 2015

Posted by **trig identities** on Sunday, May 13, 2012 at 8:16pm.

- trig pre calc -
**bobpursley**, Sunday, May 13, 2012 at 8:44pmcosx secx=1

cos^2 *csc^2= ctn^2 x

1+ctn^2=csc^2

multipy left by sin^2/sin^2

1/sin^2 (sin^2+cos^2)=

csc^2 = csc^2

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