Question

What is the length of s?​

Answer 1

s = 10
`√(2)`

Explanation:

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

sin45° =
`(√(2) )/(2)` , then

sin45° =
`(opposite)/(hypotenuse)` =
`(s)/(20)` =
`(√(2) )/(2)` ( cross- multiply )

2s = 20
`√(2)` ( divide both sides by 2 )

s = 10
`√(2)`