The solution set of (5+4 \cos \theta)(2 \cos \theta+1)=0 in the interval [0,2 \pi], is :

Correct Answer is : {2π3,4π3}

\{\frac{\pi}{3}, \frac{2 \pi}{3}\}

\{\frac{2 \pi}{3}, \frac{4 \pi}{3}\}

\{\frac{2 \pi}{3}, \frac{5 \pi}{3}\}

EAMCET Engineering 2003 Solved Paper

Section: Mathematics

Question : 159 of 160

Marks: +1, -0

The solution set of (5+4‌cos‌θ)(2‌cos‌θ+1)=0 in the interval [0,2π], is :

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