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December 22, 2014

December 22, 2014

Posted by **Charles** on Wednesday, October 8, 2008 at 8:48pm.

- Math (Trig) -
**Reiny**, Wednesday, October 8, 2008 at 8:54pmYou want 1/cos^2 (-2)

i.e. you want the cosine of -2 radians, then square that result, and finally divide 1 by that.

I got 5.7744

- Math (Trig) -
**bobpursley**, Wednesday, October 8, 2008 at 9:00pmsec (-2radian)=-2.40 by calculator

square that, and you get...

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