3 years ago

Find the lengths of side BC. Give your answer to 3 significant figures.

Mathematics

1 answer:

Alinara [238K]3 years ago

4 0

Step-by-step explanation:

since we are required to find side |BC| and the value of side |AB| is given as 6.3 cm

hence we find the cosine of the given angle...

cos71 = adjacent ÷ hypotenuse

cos71 = |AB| ÷ |BC|

cos 71 = 6.3 ÷ |BC|

|BC| = 6.3 ÷ 0.325

|BC| = 19.4 cm

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