How do you evaluate #sin (pi/4) cos (pi/6) - sin (pi/6) cos (pi/4)#?
1 Answer
Apr 5, 2016
Explanation:
The most straightforward way to do it (in my opinion) is to substitute
Therefore,
Put these into the original equation, and you get
Rearranging these become
If you want this in a decimal form, use a calculator or a savant