Question

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

Answer 1

Answer:5 or 5 degrees

Explanation:

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

2 divided by 10 = 5

Answer 2

x = y = 10

Explanation:

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

cos45° =
`(1)/(√(2) )` , then

cos45° =
`(adjacent)/(hypotenuse)` =
`(x)/(10√(2) )` =
`(1)/(√(2) )` ( cross- multiply )

x ×
`√(2)` = 10
`√(2)` ( divide both sides by
`√(2)` )

x = 10

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

x = y = 10