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11111nata11111 [884]
3 years ago
8

Special triangles 45-45-90​

Mathematics
2 answers:
Studentka2010 [4]3 years ago
8 0

9514 1404 393

Answer:

  x = y = (√10)/2

Step-by-step explanation:

In an isosceles right triangle, the side lengths are equal, and they are equal to (√2)/2 times the hypotenuse length.

  x = y = (√5)(√2)/2

  x = y = (√10)/2

dimulka [17.4K]3 years ago
8 0

Answer:

x = y = \frac{1}{2} \sqrt{10}

Step-by-step explanation:

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

sin45° = \frac{\sqrt{2} }{2}

sin45° = \frac{opposite}{hypotenuse} = \frac{x}{\sqrt{5} } = \frac{\sqrt{2} }{2} ( cross- multiply )

2x = \sqrt{10} ( divide both sides by 2 )

x = \frac{1}{2} \sqrt{10}

Since the base angles are 45° then the triangle is isosceles with both legs congruent , thus

x = y = \frac{1}{2} \sqrt{10}

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