highschoolmom2010
  • highschoolmom2010
Find the values of w and then x. Round lengths to the nearest tenth and angle measures to the nearest degree.
Mathematics
jamiebookeater
  • jamiebookeater
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highschoolmom2010
  • highschoolmom2010
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anonymous
  • anonymous
Lol. you are still doing your math homework i see! Do you remember me?
highschoolmom2010
  • highschoolmom2010
i had to take a break my brain was smoking

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anonymous
  • anonymous
sin30= w/6. get w.
highschoolmom2010
  • highschoolmom2010
lol hi @nincompoop and @katherine.ok yes i remember
anonymous
  • anonymous
Knowing w now, you now know that cos x=4/w. you know w, get x.
anonymous
  • anonymous
cosx=w/4**
highschoolmom2010
  • highschoolmom2010
ok \[\sin (30)=\frac{ w }{ 6 }\] \[(6)*\sin 30=\frac{ w }{ 6 }*6\] \[6\sin 30=w \] w=3
Jhannybean
  • Jhannybean
Good job.
highschoolmom2010
  • highschoolmom2010
@nincompoop i am using SOH CAH TOA :D
Jhannybean
  • Jhannybean
Now that you found w, use \(\large \cos(\theta) = \frac{w}{4}\)
highschoolmom2010
  • highschoolmom2010
what is that symbol ^^
Jhannybean
  • Jhannybean
sorry, \(\large \theta = x\). So \[\large \cos(x) = \frac{3}{4}\]\[\large x = \cos^{-1} \left(\frac{3}{4}\right)\]
highschoolmom2010
  • highschoolmom2010
\[\cos (x)=\frac{ 3 }{ 4 }\]
Jhannybean
  • Jhannybean
\(\large \theta\) = theta, it signifies an angle measurement.
anonymous
  • anonymous
if cos x= 3/4 , punch in your calculator arccos(3/4) or equivalently, cos^-1(3/4)
highschoolmom2010
  • highschoolmom2010
41.4=x
anonymous
  • anonymous
arccos or cos^-1 is a function which returns degree or radians to fulfill the cos ratio. good job.
highschoolmom2010
  • highschoolmom2010
ty :DD ima fast learner
highschoolmom2010
  • highschoolmom2010
@katherine.ok @nincompoop @Jhannybean thanks for the help
Jhannybean
  • Jhannybean
No problem.

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