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Diano4ka-milaya [45]
3 years ago
13

Can anyone help? PLS I NEED THIS BY TOMORROW!!

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
8 0

Answer:

x = y = 10

Step-by-step explanation:

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

cos45° = \frac{1}{\sqrt{2} } , then

cos45° = \frac{adjacent}{hypotenuse} = \frac{x}{10\sqrt{2} } = \frac{1}{\sqrt{2} } ( cross- multiply )

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

x = 10

Since the base angles are 45° then the triangle is isosceles and the 2 legs are congruent, then

x = y = 10

Sveta_85 [38]3 years ago
4 0

Answer:5 or 5 degrees

Step-by-step explanation:

the box means 90 degree so if you divide 45 with 90 you get 2

2 divided by 10 = 5

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