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OverLord2011 [107]
3 years ago
8

In triangle ABC, AB= 10cm, AC=9cm and angle B=60 degrees. Let BC=x cm. Use cosine rule to show that x is a solution of x^2-10x+1

9=0
Mathematics
1 answer:
stira [4]3 years ago
3 0

Answer:

Step-by-step explanation:

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