Can anyone me solve this. i need proper equation..

y = 9

Step-by-step explanation:

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

sin45° =

sin45° = =

Multiply both sides by y

y × sin45° = 9, that is

y × = 9

Multiply both sides by

y = 9

?=9

                √2

Step-by-step explanation:

x=9 =a side of squre

y=diagonal

use equation :

y=a√2

y=9√2

y=12.69

answer: none of these answers are correct only the second half is

step-by-step explanation:

you can use a^2+ b^2=c^2