Substituting <em>x</em> with <em>π</em>/2 - <em>x</em> gives the equivalent integral,

So if we let <em>J</em> denote the value of the integral, we have



Condensing the logarithms, we have
log(tan(<em>x</em>)) + log(cot(<em>x</em>)) = log(tan(<em>x</em>) cot(<em>x</em>)) = log(1) = 0
since cot(<em>x</em>) = 1/tan(<em>x</em>), which means

and so the original integral has a value of <em>J</em> = 0.
Answer:
None
Step-by-step explanation:
The angles inside a triangle add to 180. If the angles are 80, 80 and 40, then they must add to 180 to form a triangle.
80+80+40 = 200
This can't be a triangle.
Answer:
the answer is 600
Step-by-step explanation:
$5,000×3%×4years÷100%=$600
To convert to a decimal, divide by 100.
75 / 100 = .75