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JEE Main & Advanced Mathematics Trigonometric Equations Question Bank Relation between sides and angles, Solutions of triangles

  • question_answer
    In a triangle\[ABC\], sin\[A:\sin B\]: \[\sin C=1:2:3\]. If  \[b=4\] cm,  the perimeter of the triangle is  [MP PET 1986]

    A) \[6cm\]

    B) \[24cm\]

    C) \[12cm\]

    D) \[8cm\]

    Correct Answer: C

    Solution :

    \[b=4cm\Rightarrow a=1\times 2,c=3\times 2\] Hence perimeter \[=2+4+6=12\] cm.


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