Menu
Home / Arithmetic Aptitude / Trigonometry :: Discussion

Discussion :: Trigonometry

  1.  For Cosine Rule of any triangle ABC, c² is equal to

    2. A.

    a² - b² + 2ab sin A
    B.

    a² + b² + 2ab cos A
    C.

    a² + b² - 2ab cos C
    D.

    c² + a² + 2ac cos C

    View Answer

    Workspace

    View Answer

    Answer : Option C

    Explanation :

    a² + b² - 2ab cos C

Write your comments here:

Be The First To Comment