Posted by **Ray** on Sunday, March 7, 2010 at 4:31pm.

What is the value of theta if 9 cos^2 theta + 3 cos theta = 0 where 90 degrees < theta < 180 degrees?

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March 24, 2017
Posted by **Ray** on Sunday, March 7, 2010 at 4:31pm.

What is the value of theta if 9 cos^2 theta + 3 cos theta = 0 where 90 degrees < theta < 180 degrees?

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