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Fofino [41]
2 years ago
14

V^2=12^2+2(-6)(9) give me the answer please

Mathematics
2 answers:
Tatiana [17]2 years ago
4 0

Answer:

6

Step-by-step explanation:

It is because v²=36 but v=6

mel-nik [20]2 years ago
4 0

Answer:

v=6 or v=−6

Step-by-step explanation:

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Solve the triangle A=21 C=105 c=5
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Answer:

Granted that uppercase letters are the angles measurements and lowercase letters are the side lengths. I also was unable to round as I don't know to what decimal you need to round to.

First to find the measure of angle B, we must subtract A and C from 180

180-21-105=54

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Next, we can use the law of sines in order to find the measures of a and b

As a reminder, The law of sines is

\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}

First, lets solve for b

\frac{b}{sin54}=\frac{5}{sin105} \\\\b=\frac{(5)sin54}{sin105}\\\\b=4.187780119

Next lets solve for a

\frac{a}{sin21}=\frac{5}{sin105} \\\\a=\frac{(5)sin21}{sin105}\\\\a=1.85504901

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