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What is the measurement of BC?
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What is the measurement of BC?

What is the measurement of BC?-example-1
User Ephes
by
3.2k points

2 Answers

2 votes

Answer:

180 - 90 - 70 = 20

13/sin90 = BC / sin20

BC = 4.45

User Kuhlemann
by
3.0k points
3 votes

Answer:


BC=4.42

Explanation:

Given:

∠B=70°

AB=13

cos(B°)=
(Base)/(Hypotenuse)

cos(70°)=
(BC)/(13)

Given: cos(70°)≈0.34


0.34=(BC)/(13) \\\\BC=0.34*13\\\\BC=4.42

The measurement of BC is


BC=4.42

User Dvkch
by
3.4k points
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