How do you evaluate #cos[(pi/2)/2]#?
2 Answers
Mar 14, 2018
Evaluate the parenthetical expression first, then the cosine follows.
Explanation:
The cosine function just applies to whatever is defined to it. It may be a function itself. In this case it is just and expression.
Mar 16, 2018
The answer is
Explanation:
The previous answer is the most correct way to compute this, but I would also like to point out that it is also possible to use the half-angle theorem in this case:
In this case, our