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Find the roots of the equation using the Quadratic Formula
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$\tan\left(120\right)+\frac{-\cos\left(135\right)}{\cos\left(300\right)}=0$
Learn how to solve equations problems step by step online. Find the roots of tan(120)+(-cos(135))/cos(300). Find the roots of the equation using the Quadratic Formula. The cosine of 300 equals . The cosine of 135 equals . Multiply -1 times -\frac{\sqrt{2}}{2}.