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DaniilM [7]
3 years ago
12

Find a, please do not guess or if your not sure. i need help not guesses for points. (it’s geometry)

Mathematics
2 answers:
grigory [225]3 years ago
6 0

Answer:

<h2> \huge\boxed{\boxed{a=6}}</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • trigonometry
  • PEMDAS
  • equation
<h3>tips and formulas:</h3>
  • sin(30°)=½
  • sin(x)=opp/hypo
<h3>let's solve:</h3>

step - 1 : define

\sin( {30}^{o} )  =  \frac{a}{12}

step - 2   :  solve

  1. \tt substitute \: the \: value \: of \:  \sin( {30}^{o} )   \\ \tt \frac{1}{2}  =  \frac{a}{12}
  2. \tt cross \: multiplication : \\  \tt2a = 12
  3. \tt divide \: both \: sides \: by \: 2 :  \\  \tt  \frac{2a}{2}  =  \frac{12}{2}   \\ \therefore a = 6
Reika [66]3 years ago
3 0
A = 6 (making this longer lol)
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