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Elenna [48]
3 years ago
8

In triangle $ghi$, we have $gh = hi = 25$ and $gi = 30$. what is $\sin\angle ghi$? (note: this is not the exact same as the prev

ious problem!)
Mathematics
1 answer:
nevsk [136]3 years ago
7 0
We have the following rule:
cos (ghi)= \frac{gh^2+ih^2-gi^2}{2(gh)(ih)}\\= \frac{25^2+25^2-30^2}{2\times25\times25}=0.28
In order to find the sine, simply do like this:
sin(ghi)=\sqrt{1-0.28^2}=0.96
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Answer:

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Step-by-step explanation:

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Let us simplify that expression first for future use.

4\div9\frac{1}{3}=4\div\frac{28}{3} =4 X \frac{3}{28} =\frac{3}{7}

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If Noah follows the same recipe,

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Using Ratio Method

→  Name  :  Cup  :  Cake

→  Clare   :    1        :   \frac{3}{7}

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By using cross multiplication

c X 1 = \frac{3}{7}f

c= \frac{3}{7}f

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