On triangle ABC,angle B=90, angle A=x degree,angle C=2x and AB=12cm.find BC
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10
Answer:
B+a+c=180=90=3x
Step-by-step explanation:
x=90/3=30
AB=12cm and angle a =30
tan30=Bc/AB
1/√3=bc/12
bc=12/3√
bc=4√3
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6
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