Answer:
22 km
Step-by-step explanation:
Well if sides of the triangle are 20 km and 21 km then it has to be 22 km
Answer:
graph attached
Step-by-step explanation:
A graph is a pictorial representation that represent the relationship between two or more things.
Cosine function is periodic with period
. If the point
lies on the graph, point
will also lie on the graph where k is any integer.
Here,
![cos(x-\pi )=cos[-(\pi -x)]=cos(\pi -x)=-cos x](https://tex.z-dn.net/?f=cos%28x-%5Cpi%20%29%3Dcos%5B-%28%5Cpi%20-x%29%5D%3Dcos%28%5Cpi%20-x%29%3D-cos%20x)
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Answer:
Step-by-step explanation:
An irrational number is a number that cannot be expressed as a fraction. It has to have decimals that don't repeat or end. So your answer is no