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Tom [10]
3 years ago
12

Find x in this 45°-45°-90° triangle. x = 4.5√2 9 18

Mathematics
1 answer:
postnew [5]3 years ago
5 0

Answer:

x = 9

Step-by-step explanation:

Using the sine ratio in the right triangle and the exact value

sin45° = \frac{1}{\sqrt{2} } , then

sin45° = \frac{opposite}{hypotenuse} = \frac{x}{9\sqrt{2} } = \frac{1}{\sqrt{2} } ( cross- multiply )

x × \sqrt{2} = 9\sqrt{2} ( divide both sides by \sqrt{2} )

x = 9

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