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September 18, 2014

September 18, 2014

Posted by **Poindexter** on Monday, November 17, 2008 at 11:30pm.

(1) 5/(tanx+secx)

(2) 4cos^2x-4cosx-1=0

Thank you.

- More trig -
**bobpursley**, Monday, November 17, 2008 at 11:41pm1) is not an equation

2)

cosx= (4+-sqrt(16-4*(4)(-1))/8= you do it

check my thinking.

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