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Tcecarenko [31]
3 years ago
14

Find the measure of angle B​

Mathematics
1 answer:
Irina18 [472]3 years ago
8 0

Answer:

Step-by-step explanation:

Use the Law of Cosines for this. If we want the measure of angle B, then the equation is set up like this:

b^2=a^2+c^2-2accosB

Filling in:

9^2=14^2+6^2-2(14)(6)cosB and simplifying a bit:

81 = 196 + 36 - 168cosB and a bit more:

81 = 232 - 168cosB and even more:

-151 = -168cosB and divide both sides by -168 to get

.9378881988 = cosB

Now use the 2nd button on your calculator along with the cos button to find the missing angle. Make sure your calculator is in degree mode first. Your angle should be 20.30012152

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Step-by-step explanation:

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3 years ago
The N71-90 virus will give an infected person a mild rash on their arms once the person has 1 billion of the virus cells in thei
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Answer:

  • B. 256

Step-by-step explanation:

<u>Given function:</u>

  • v(h) = 2^(h/4)

<u>It can be rewritten as:</u>

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<u>If number of divisions is 8, then:</u>

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3 years ago
Read 2 more answers
Name the property shown. (3 • 5) • 12 = 3 • (5 • 12)
Nata [24]
Commutative i believe <span />
8 0
3 years ago
Justin has $7.50 more than Eva, and Emma has $12 less than Justin. Together , they have a total of 63.00. How much money does ea
Setler [38]
Since no value is given to Eva, we'll call her x. Justin, then, is 7.50+x. That leaves Emma, who would be Justin (7.50+x) -12. If we add them all together we get 63. So our equation is

x + (7.50+x) + (7.50+x)-12 = 63

Combine like terms

x+x+x + 7.50+7.50-12 = 63
3x + 3 = 63
3x = 60
x = 20

Since we said Eva is x then Eva has 20 dollars.

Justin is 7.50 + x so 7.50+20=
$27.50

Emma is Justin - 12 so 27.50-12= $15.50

Let's check our answer...

15.50+27.50+20 = 63
63=63

It checks!
4 0
3 years ago
Solve in degrees. 0 &lt; θ &lt; 360<br> 1. tan θ = 3.5134
Temka [501]

Answer:

Therefore,

\theta=74.11\°\ or\ \theta=254.11\°

Step-by-step explanation:

Given:

0° < θ < 360°

tan θ = 3.5134

To Find:

θ in degrees = ?

Solution:

0° < θ < 360° .............Given

Means ' θ ' is between 0° and 360°

\tan \theta=3.5134 .............Given

Therefore,

\theta=\tan^{-1} (3.5134)

Also,

\tan (180+\theta)=\tan \theta

So  ' θ '  will have Two values for tan θ =3.5134

\therefore \theta=74.11\°\ or\ \theta=180+74.11=254.11\°

Therefore,

\theta=74.11\°\ or\ \theta=254.11\°

5 0
3 years ago
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