Largest angle of the triangle

What is the largest angle of the triangle if the second angle is 10° greater than twice the first and the third is 30° smaller than the second?

Final Answer:

B =  86 °

Step-by-step explanation:

A+B+C=180 B = 10 + 2A C = B30  A+(10+2A)+(B30)=180  A+(10+2 A)+((10+2 A)30)=180  5A=190  A=5190=38  A=38  B=10+2 A=10+2 38=86=86 C=B30=8630=56 



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algebraplanimetryUnits of physical quantitiesGrade of the word problem

 
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