Wb Jee
Trigonometric Functions And Equations
WB JEE 2009
MCQ+1 / -0.252009
If \(5\cos 2\theta + 2{\cos ^2}\theta /2 + 1 = 0\), when \((0 < \theta < \pi )\), then the values of \(\theta\) are
Wb Jee
WB JEE 2009
If \(5\cos 2\theta + 2{\cos ^2}\theta /2 + 1 = 0\), when \((0 < \theta < \pi )\), then the values of \(\theta\) are