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OverLord2011 [107]

2 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

1 answer:

stira [4]2 years ago

3 0

Answer:

Step-by-step explanation:

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