The angles ratio

The angles in the ABC triangle are in the ratio 1: 2: 3. find the sizes of the angles and determine what kind of a triangle it is.

Correct answer:

A =  30 °
B =  60 °
C =  90 °

Step-by-step explanation:

A:B:C=1:2:3  d=180/(1+2+3)=30   A=1 d=1 30=30
B=2 d=2 30=60
C=3 d=3 30=90

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