Remember that

So if
and
, then we know
.
Then use the Pythagorean identity to solve for cosine:

Answer:
The answer is 61.
Step-by-step explanation:
Let, the numbers are: x, (x+2), (x+4)
Now, x+x+2+x+4 = 183
3x + 6 = 183
3x = 177
x = 59
So, second number would be: (x+2) = (59+2) = 61
Answer:
TNX for da points
Step-by-step explanation:
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Answer:The mean is 13
Step-by-step explanation:
Add all up and divide by 10 because there are 10 numbers