If the angles of a triangle are in the ratio 2 : 3 : 7  ,then the sides are in the ratio 

If the angles of a triangle are in the ratio 2 : 3 : 7  ,then the sides are in the ratio 

  1. A

     2:2:3+1

  2. B

    2:2:3+1

  3. C

    2:3+1:2

  4. D

    2:3:7

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    Solution:

    Let ABC be triangle whose angles A, Band Care::-  

    the ratio  2 : 3 : 7.  

    Let A=2λ,B=3λ  and AC=7λ Then, 

    A+B+C=180λ=15A=30,B=45 and C=105asinA=bsinB=csinCasin30=bsin45=csin105a12=b12=c3+122a2=b2=c3+1

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