Question

Find y.
PLEASE HELP ASAPPPP

Answer 1

y = 4

Explanation:

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

cos45° =
`(1)/(√(2) )` , then

cos45° =
`(adjacent)/(hypotenuse)` =
`(y)/(4√(2) )` =
`(1)/(√(2) )` ( cross- multiply )

y ×
`√(2)` = 4
`√(2)` ( divide both sides by
`√(2)` )

y = 4

Answer 2

y = 4

Explanation:

`(sin(90))/(4√(2) ) = (sin(45))/(y)`