Step-by-step explanation:
![sin \theta \: cos(90 \degree - \theta) + cos \theta \: sin(90 \degree - \theta) \\ = sin(\theta + 90 \degree - \theta) \\ = sin(90 \degree) \\ = 1](https://tex.z-dn.net/?f=sin%20%5Ctheta%20%5C%3A%20cos%2890%20%5Cdegree%20-%20%5Ctheta%29%20%2B%20cos%20%5Ctheta%20%5C%3A%20sin%2890%20%5Cdegree%20-%20%5Ctheta%29%20%5C%5C%20%20%3D%20sin%28%5Ctheta%20%2B%2090%20%5Cdegree%20-%20%5Ctheta%29%20%5C%5C%20%20%3D%20sin%2890%20%5Cdegree%29%20%20%5C%5C%20%20%3D%201)
2!!! I better get 5 points
Answer:
13
Step-by-step explanation:
You are given the function
![f(x)=\dfrac{x}{2}+8](https://tex.z-dn.net/?f=f%28x%29%3D%5Cdfrac%7Bx%7D%7B2%7D%2B8)
To find the value of the function f(x) at point x=a, you have to substitute a instead of x into the function expression.
In your case, you have to evaluate f(x) when x=10. Substitute 10 instead of x into the function expression:
![f(10)=\dfrac{10}{2}+8=5+8=13](https://tex.z-dn.net/?f=f%2810%29%3D%5Cdfrac%7B10%7D%7B2%7D%2B8%3D5%2B8%3D13)
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Answer:
cos L = ![\frac{23}{25}](https://tex.z-dn.net/?f=%5Cfrac%7B23%7D%7B25%7D)
Step-by-step explanation:
cos L =
=
= ![\frac{23}{25}](https://tex.z-dn.net/?f=%5Cfrac%7B23%7D%7B25%7D)