Math B----->The expression cos theta (sec theta- cos theta) is equivalent to...? - Freemason Hirams Travels Masonic Forums

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$Math B----->The expression cos theta (sec theta- cos theta) is equivalent to...?$ Math B----->The expression cos theta (sec theta- cos theta) is equivalent to...?

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03-02-2008, 04:54 AM

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Math B----->The expression cos theta (sec theta- cos theta) is equivalent to...?

A) sin^2 theta
B) -cos^2 theta
C) 1
D) sin theta
Use trig identities and explain reasoning please.

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