MCQ
$\int_0^{\frac{\pi}{6}} \cos x \cdot \cos 2 x d x=$
  • A
    $\frac{5}{6}$
  • B
    $\frac{1}{6}$
  • $\frac{5}{12}$
  • D
    $-\frac{5}{12}$

Answer

Correct option: C.
$\frac{5}{12}$
C

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