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Discussion :: Trigonometry

  1.  For any acute angle, sine A is equal to

    2. A.

    sin (90° - A)
    B.

    sin (180° - A)
    C.

    sin (180° + A)
    D.

    sin (2A - 180°)

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    Answer : Option B

    Explanation :

    sin (180° - A)

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