This equaltion was to eazy for me (im Asian) the answer is obbyisly a D.
SOH CAH TOA
SinA=Opposite/Hypot.
CosA=Adjacent/Hypot.
SinA = 12/13
CosA=5/13
Second Option
Answer:
sin90 =1
cos 90 = 0
Step-by-step explanation:
θ = 90 degrees
Answer:
The area of the parallelogram is 117.
Step-by-step explanation:
You do 9x13= area
9x13= 117
Answer:

Step-by-step explanation:
We are given:
![x^2=18x+y\qquad\qquad[1]](https://tex.z-dn.net/?f=x%5E2%3D18x%2By%5Cqquad%5Cqquad%5B1%5D)
![y^2=18y+x\qquad\qquad[2]](https://tex.z-dn.net/?f=y%5E2%3D18y%2Bx%5Cqquad%5Cqquad%5B2%5D)
Subtracting [1] and [2]:

Operating:

Recall:

Substituting:

Rearranging:


Dividing by x-y (recall x≠y):

![x+y=17\qquad[3]](https://tex.z-dn.net/?f=x%2By%3D17%5Cqquad%5B3%5D)
Now we add [1] and [2]:

Rearranging:



Substituting from [3]

Adding 1:

Taking the square root:

Thus:
