Answer:
Part I: cot(15 degrees) = cot(45 - 30)
Part II: Evaluation is below
Step-by-step explanation:
<em>Everything is done in degrees</em>
<em />
Two angles that differ by 15 degrees that is easy to evaluate is 30 degrees and 45 degrees. The cot(15 degrees) = cot(45 - 30) = 1/tan(45-30) = (1+tan45tan30)/(tan30 - tan45) = (1+ sqrt(3))/(sqrt(3) - 1)
We rationalize this by multiplying 1+ sqrt(3) in the top and bottom, getting:
(4 + 2sqrt(3))/2 = 2 + sqrt(3)
I hope this helps! :)
Whats the question?
Please be more specific
Answer:
it has no solutions
Step-by-step explanation:
y = mx + b
y = -5x - 1......slope here is -5 and y int is -1
y = -5x + 7....slope here is -5 and y int is 7
Answer:
2nd one
Step-by-step explanation:
Yes; the corresponding sides are proportional
Answer:
Step-by-step explanation:
So we have the equation:
And we want to solve for a.
So, subtract 1.2a from both sides:
Now, subtract 3.4b from both sides:
And that's our answer :)
