3 years ago

I don’t know how to do this

Mathematics

1 answer:

Jet001 [13]3 years ago

6 0

Use proportions because we know that the triangles are similar.

$\frac{20}{28}=\frac{5}{x}$

Cross multiply.

20x=28×5

x=7

answer: 7

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What is the length of AC¯¯¯¯¯

Nutka1998 [239]

Answer: AC=12 cm

Step-by-step explanation:

To solve this problem you must apply the law of sines, as you can see below:

$\frac{a}{sinA}=\frac{b}{sinB}$

Where:

a=13

A=85.2°

B=71.6°

Therefore, you must solve for b, then, you obtain that the lenght AC asked in the problem above is:

$b={sinB}*\frac{a}{sinA}\\b=\frac{sin(71.6)*13}{sin(85.2)}\\b=12$

5 0

3 years ago

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Suppose the diameter of a circle is 4. What is its radius? and please explain

Olin [163]

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