state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Mathematics Trigonometry Trigonometric Functions
The sum of all the solutions of the equation \(\cos x \cdot \cos \left( {\frac{π }{3} + x} \right) \cdot \cos \left( {\frac{π }{3} - x} \right) = \frac{1}{4}\), x ∈ [0, 6π] is:
1
30 π
2
24 π
3
18 π
4
12 π
5
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