All rhombuses have 2 pairs of parallel sides.
By definition, the sine of an angle is given by:

Where,
C.O: opposite leg
h: hypotenuse
The hypotenuse is given by:

So, replacing values we have:

Rewriting we have:
Answer:
the sine value of this function is:
A)5 times square root 61 over 61
Answer:
y.
Step-by-step explanation:
The correct answer would be A. Hope this helps
Hi there!
x - 3y = 9
x = 9 + 3y
-4x + y = 8
-4(9+3y) + y = 8
-36 - 12y + y = 8
-36 - 11y = 8
-11y = 44
-y = 4
y = -4
x - 3y = 9
x - 3(-4) = 9
x + 12 = 9
x = 21
So, your answers are y = -4 and x = 21.
Hope this helps!