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Reptile [31]
3 years ago
11

Leave your answer in simplest radical form

Mathematics
2 answers:
Nata [24]3 years ago
7 0
<h2>Hello!</h2>

The answer is:

The third option,

KL=7\sqrt{2}

<h2>Why?</h2>

Since we are working with a right triangle, we can use the following identity:

Sin(\alpha)=\frac{y}{hypothenuse}

We are given:

\alpha =45\°\\LM=y=7

hypothenuse=KL

Then, substituting and solving we have:

Sin(45\°)=\frac{7}{hypothenuse}

Hypothenuse=KL=\frac{y}{Sin(45\°)}=\frac{7}{\frac{\sqrt{2} }{2} } \\\\Hypothenuse=KL=7\sqrt{2}

Hence, the answer is the third option,

KL=7\sqrt{2}

Have a nice day!

Troyanec [42]3 years ago
6 0

Answer:

|KL|=7\sqrt{2}

Step-by-step explanation:

The given triangle is a right triangle.

The m<K=45 degrees.

This means the measure of <L is  also 45 degrees.

This implies that;

|LM|=|KM|=7 units.

From the Pythagoras Theorem;

|KL|^2=|LM|^2+|KM|^2

|KL|^2=7^2+7^2

|KL|^2=2(7^2)

|KL|=\sqrt{2(7^2)}

|KL|=7\sqrt{2}

Option C is correct.

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