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Aleks04 [339]
3 years ago
5

Please help!!!!!!!!!!

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
7 0

Answer:

\large\boxed{a=4\sqrt3}

Step-by-step explanation:

We have the triangle 30° - 60° - 90°.  In that triangle sides are in proportion

1 : √3 : 2 <em>(look at the picture).</em>

<em />

We have

a\sqrt3=12         <em>multiply both sides by √3   (use √a · √a = a)</em>

3a=12\sqrt3       <em>divide both sides by 3</em>

a=4\sqrt3

b=2a\to b=2(4\sqrt3)=8\sqrt3

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