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Help me with this question please

Help me with this question please-example-1
User Richmb
by
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1 Answer

4 votes

Answer:

x= 2√ 7

Explanation:

We can solve it with applying the sin of 30°

Sin 30° = opposite leg / hypotenuse

Sin 30° = √ 7 / x

Being x unknown.

Now, being 30° a notable angle, we know that its sin is 1/2.

Sin 30° = 1/2

Replacing,

Sin 30° = √ 7 / x. (we clear x)

1/2 = √ 7 / x

x/2 = √ 7

x= 2√ 7

User Hadrian
by
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