ANSWER
D) sin Y
EXPLANATION
The given triangle is a right triangle.
This implies that that:
![x + y = 90 \degree](https://tex.z-dn.net/?f=x%20%2B%20y%20%3D%2090%20%5Cdegree)
Then we have
![y= 90 - x](https://tex.z-dn.net/?f=y%3D%2090%20-%20x)
Recall that
![\cos(x) = \sin(90 - x)](https://tex.z-dn.net/?f=%20%5Ccos%28x%29%20%20%3D%20%20%5Csin%2890%20-%20x%29%20)
But
![90 - x = y](https://tex.z-dn.net/?f=90%20-%20x%20%3D%20y)
When we do the substitution, we get,
![\cos(x) = \sin(y)](https://tex.z-dn.net/?f=%20%5Ccos%28x%29%20%20%3D%20%20%5Csin%28y%29%20)
Therefore cos(x) is a equivalent to sin(y).
The correct answer is D.
? Ummm What is the question???
Answer:
G). 1.2x + 7.92 -3.3x = 41
-2.1x=33.08
x = 33.08/-2.1
x = - 15.752
H). 3x/2 + 9/5 = 12
Multiply through by 10
15x + 18 =120
15x =120-18
15x = 102
x =102/15
x=34/5
I). 5 = 9/4 - r/3
Multiply through by 12
60= 27 - 4r
60 - 27 = -4r
33 = - 4r
r = -33/4
J). 2(x - 2) = 12
2x - 4 = 12
2x = 16
x = 16/2
x = 8
Your answer is 18 y=29/5x=18