MCQ
cos (- 660°) का मान है-
  • A
    $\frac{\sqrt{3}}{2}$
  • B
    $-\frac{1}{2}$
  • $\frac{1}{2}$
  • D
    $\frac{1}{\sqrt{2}}$

Answer

Correct option: C.
$\frac{1}{2}$
(C) $\frac{1}{2}$

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