Jeamileth
19.06.2020 •
Mathematics
If you can answer this that would be amazing thank you!!
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Ответ:
BC ≈ 19.4 cm
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos71° =
= 
= 
( multiply both sides by BC )
BC × cos71° = 6.3 ( divide both sides by cos71° )
BC =
≈ 19.4 cm ( to 3 significant figures )
Ответ:
There are total 15 observations
Answer
The number of observations is 15.