Question

Hi what is the exact value of -(pi/12) ?

Answer 1

`-\frac{pi}{12} \approx -0.26179938779`

Explanation:

Do you mean the numeric value? We can't do much more than putting it into a calculator and read the number of digits we need, since the answer will be an infinite, non-repeating decimal number (these are known as trascendental numbers)

So, you may start with

`pi \approx 3.14159265359`

Then we divide by twelve:

`\frac{pi}{12} \approx 0.26179938779`

And finally change the sign:

`-\frac{pi}{12} \approx -0.26179938779`