The answer will be C. Theme basically means the message of a story.
Answer:
their are 17 cows
Step-by-step explanation:
7x2=14
82-14=68
68/4=17
Answer: your obviously going to need to use the method a2+b2=c2
Try to calculate the radius if not given to you.
Step-by-step explanation:
Answer:
![\bold{x =cos\theta}\\\bold{y=sin\theta}](https://tex.z-dn.net/?f=%5Cbold%7Bx%20%3Dcos%5Ctheta%7D%5C%5C%5Cbold%7By%3Dsin%5Ctheta%7D)
Step-by-step explanation:
The given system of linear equations is:
![(cos\theta)x+(sin\theta)y=1\\(-sin\theta)x+(cos\theta)y=0](https://tex.z-dn.net/?f=%28cos%5Ctheta%29x%2B%28sin%5Ctheta%29y%3D1%5C%5C%28-sin%5Ctheta%29x%2B%28cos%5Ctheta%29y%3D0)
We have to solve the equations for the values of
.
Let us use elimination method in which we eliminate one of the variables from the two variables.
For this, let us multiply the first equation by
and second equation by ![cos\theta](https://tex.z-dn.net/?f=cos%5Ctheta)
Now, the equations become:
![(cos\theta.sin\theta)x+(sin\theta.sin\theta)y=sin\theta\\\Rightarrow (cos\theta.sin\theta)x+(sin^2\theta)y=sin\theta ....... (1)\\\\(-sin\theta.cos\theta)x+(cos\theta.cos\theta)y=0\\\Rightarrow (-sin\theta.cos\theta)x+(cos^2\theta)y=0 ..... (2)](https://tex.z-dn.net/?f=%28cos%5Ctheta.sin%5Ctheta%29x%2B%28sin%5Ctheta.sin%5Ctheta%29y%3Dsin%5Ctheta%5C%5C%5CRightarrow%20%28cos%5Ctheta.sin%5Ctheta%29x%2B%28sin%5E2%5Ctheta%29y%3Dsin%5Ctheta%20.......%20%281%29%5C%5C%5C%5C%28-sin%5Ctheta.cos%5Ctheta%29x%2B%28cos%5Ctheta.cos%5Ctheta%29y%3D0%5C%5C%5CRightarrow%20%28-sin%5Ctheta.cos%5Ctheta%29x%2B%28cos%5E2%5Ctheta%29y%3D0%20.....%20%282%29)
Now, let us add (1) and (2):
![(sin^2\theta)y+(cos^2\theta)y=sin\theta\\\Rightarrow (sin^2\theta+cos^2\theta)y=sin\theta\\\Rightarrow (1)y=sin\theta\\\Rightarrow y = sin\theta](https://tex.z-dn.net/?f=%28sin%5E2%5Ctheta%29y%2B%28cos%5E2%5Ctheta%29y%3Dsin%5Ctheta%5C%5C%5CRightarrow%20%28sin%5E2%5Ctheta%2Bcos%5E2%5Ctheta%29y%3Dsin%5Ctheta%5C%5C%5CRightarrow%20%281%29y%3Dsin%5Ctheta%5C%5C%5CRightarrow%20y%20%3D%20sin%5Ctheta)
Using the equation:
![(-sin\theta)x+(cos\theta)y=0](https://tex.z-dn.net/?f=%28-sin%5Ctheta%29x%2B%28cos%5Ctheta%29y%3D0)
Putting value of
:
![\Rightarrow (-sin\theta)x+(cos\theta)sin\theta=0\\\Rightarrow (sin\theta)x=(cos\theta)sin\theta\\\Rightarrow x = cos\theta](https://tex.z-dn.net/?f=%5CRightarrow%20%28-sin%5Ctheta%29x%2B%28cos%5Ctheta%29sin%5Ctheta%3D0%5C%5C%5CRightarrow%20%28sin%5Ctheta%29x%3D%28cos%5Ctheta%29sin%5Ctheta%5C%5C%5CRightarrow%20x%20%3D%20cos%5Ctheta)
So, the answer to the system of linear equations is:
![\bold{x =cos\theta}\\\bold{y=sin\theta}](https://tex.z-dn.net/?f=%5Cbold%7Bx%20%3Dcos%5Ctheta%7D%5C%5C%5Cbold%7By%3Dsin%5Ctheta%7D)
Answer:
60
Step-by-step explanation: