Question

HELPPP PLS
Find the value of the variable.

Answer 1

y = 90
`√(2)`

Explanation:

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

sin45° =
`(1)/(√(2) )` , then using the 45° angle on the lower left

sin45° =
`(opposite)/(hypotenuse)` =
`(90)/(y)` =
`(1)/(√(2) )` ( cross- multiply )

y = 90
`√(2)`