Convert 75 Degrees to Radian Measure - 5/12 pi

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To convert 75 degrees to radians, the formula used is degrees multiplied by π/180. This results in 75π/180, which simplifies to 5/12π. The discussion emphasizes leaving the answer in terms of π instead of calculating a decimal approximation. It is advised to avoid evaluating π unless necessary for practical applications. The correct notation for the radian measure of 75 degrees is thus 5/12π.
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convert 75 degrees to radian measure

the answer is 5/12 pi

i know that for converting degrees to radians you multiply the degrees by pi/180 degrees and when i do it i get the answer 1.3089... but how do you get the answer as above, in that form? i have changed the mode of my calculator from degrees to radians and vice versa but i can't get the answer in that notation.
 
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Reduce 75\pi/180 and leave it in terms of pi; don't put it in the calculator.
 
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Following Bohrok's advice, you basically never evaluate \pi unless you are doing some sort of physical application where it's nice to have the approximate solution.
 
I tried to combine those 2 formulas but it didn't work. I tried using another case where there are 2 red balls and 2 blue balls only so when combining the formula I got ##\frac{(4-1)!}{2!2!}=\frac{3}{2}## which does not make sense. Is there any formula to calculate cyclic permutation of identical objects or I have to do it by listing all the possibilities? Thanks
Since ##px^9+q## is the factor, then ##x^9=\frac{-q}{p}## will be one of the roots. Let ##f(x)=27x^{18}+bx^9+70##, then: $$27\left(\frac{-q}{p}\right)^2+b\left(\frac{-q}{p}\right)+70=0$$ $$b=27 \frac{q}{p}+70 \frac{p}{q}$$ $$b=\frac{27q^2+70p^2}{pq}$$ From this expression, it looks like there is no greatest value of ##b## because increasing the value of ##p## and ##q## will also increase the value of ##b##. How to find the greatest value of ##b##? Thanks
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