Maths
This question was asked in Ex 11.2, 4

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Shivam Singh's image
Shivam Singh
Dec. 13, 2017, 5:46 a.m.

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vaishnavi sridharan's image
vaishnavi sridharan
Dec. 13, 2017, 7:02 a.m.

Bro nothing use sum of all side of triangle 

 Sum of all side of 🔺 =180

angleA+angleB+angleC=180

105+45+angleC=180

angleC=30

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