Hmmm if you don't have a Unit Circle, this is a good time to get one, many you can find online. Anyhow, check your unit circle for cos(30°) and sin(30°).

$\bf tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)}\qquad \qquad tan(30^o)=\cfrac{sin(30^o)}{cos(30^o)}
\\\\\\
tan(30^o)=\cfrac{\quad \frac{1}{2}\quad }{\frac{\sqrt{3}}{2}}\implies tan(30^o)=\cfrac{1}{2}\cdot \cfrac{2}{\sqrt{3}}\implies tan(30^o)=\cfrac{1}{\sqrt{3}}
\\\\\\
\stackrel{\textit{and now if we rationalize the denominator}}{\cfrac{1}{\sqrt{3}}\cdot \cfrac{\sqrt{3}}{\sqrt{3}}\implies \cfrac{\sqrt{3}}{(\sqrt{3})^2}\implies \cfrac{\sqrt{3}}{3}}$

8 0

3 years ago

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18. Mabel gave Margo a bag containing red, white, and

Sedbober [7]

So if the bag contains half as many red marbles as blue ones, and there are 8 reds then there are 16 blues. 16 + 8= 24 if you want there to be 1/4 white marbles add 6. 6/30 is 1/4.

So the answer comes out to be 30 marbles in the bag

4 0

3 years ago

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Rosa spent $11.52 on 8 candy necklaces for each of her two friends. How much did each necklace cost?

Liono4ka [1.6K]

Answer:

i don't wanna tell u the wrong answer but I think it is A

Because it says 8 neclaces for EACH of her two friends

So i divided 11.52 by 16

So i got 0.72 I am sorry if it is wrong Have a great day!

3 0

3 years ago

I need help im gonna post 3 more different questions pls answer them.

Arisa [49]

Answer:

Step-by-step explanation:

x³ - (3 + x)²

4³ - (3 + 4)²

8 0

3 years ago