InterviewSolution
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InterviewSolution
| 1. |
In ? ABC, angle C = 3angle B = 2 ( angle A + angle B). Find the angles. |
| Answer» Let the {tex}\\angle{/tex} B=x then {tex}\\angle{/tex}C=3x3x=2({tex}\\angle{/tex}A+x)3x=2{tex}\\angle{/tex}A+2xx=2 {tex}\\angle{/tex}A , {tex}\\angle{/tex}A=x/2{tex}\\angle{/tex}A+{tex}\\angle{/tex}B+{tex}\\angle{/tex}C=180x/2+x+3x=1809x/2=180,x=40so {tex}\\angle{/tex}A=20,{tex}\\angle{/tex}B=40 ,{tex}\\angle{/tex}C=120 | |