thanks for your help!

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- Feb 11th 2009, 01:46 AMsarabara2cosēθ+6cosθ=3
thanks for your help!

- Feb 11th 2009, 02:05 AMmathaddict
This is the same as one of your previos thread .

First , replace $\displaystyle \cos\theta $with x . After that use the quadratic formula to find x , then solve for $\displaystyle \theta$