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In ∆ABC,angle C=3angleB,angleC=2(angleA+angleB),then find all the …

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In ∆ABC,angle C=3angleB,angleC=2(angleA+angleB),then find all the angles

Posted by Ashok Choudhary 7 years, 7 months ago

CBSE > Class 10 > Mathematics

4 answers

Ashok Choudhary 7 years, 7 months ago

It has been taken from practice papers from cbse guide only

0Thank You

Shivani Pradhan 7 years, 7 months ago

<A+<B+<C=180 <A+<B+2(<a+<b)=180 3(<a+<b)=180 <a+<b=60....... i again , <a+<b+<c=180 <a+<b+3<b=180 <a+4<b=180......ii subtracting eq.i from eq. ii we get , <B=40 putting the value of B we can find the value of angle A and C.. A=20 , C= 120

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Shivani Pradhan 7 years, 7 months ago

< A+<B+<C=180

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Prashant Chaudhary 7 years, 7 months ago

I am not understanding your question..

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CBSE > Class 10 > Mathematics