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

Answer:
x = 9
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin45° = [tex]\frac{1}{\sqrt{2} }[/tex] , then
sin45° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{x}{9\sqrt{2} }[/tex] = [tex]\frac{1}{\sqrt{2} }[/tex] ( cross- multiply )
x × [tex]\sqrt{2}[/tex] = 9[tex]\sqrt{2}[/tex] ( divide both sides by [tex]\sqrt{2}[/tex] )
x = 9
For a given triangle the value of x will be equal to 9.
The branch of mathematics sets up a relationship between the sides and the angles of the right-angle triangle is termed trigonometry.
Using the sine ratio in the right triangle and the exact value
sin45° = x / 9√2 , then
x = 9√2 x sin45°
x = 9
Therefore for a given triangle, the value of x will be equal to 9.
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