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March 3, 2015

March 3, 2015

Posted by **VesaN** on Friday, May 7, 2010 at 12:35pm.

- equation trig -
**bobpursley**, Friday, May 7, 2010 at 3:18pmsquare both sides

cos^2 -2sin*cos + sin^2<1/4

1-sin(2x)<1/4

sin(2x)<-3/4

2x>131deg

x>65.5 deg

2x<311

x<155 check that with a graph.

- equation trig -
**VesaN**, Saturday, May 8, 2010 at 8:48amthnx

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