posted by Jess .
Find the exact value of sin 15°.
I got square root of 2-squaroot of 3/2
is that correct?
You'd have to get used to being precise with parentheses if you want to do well in maths.
I got "square root of 2-squaroot of 3/2"
√2 - √(3/2),
more or less, which is probably not quite what you mean.
can be found by the half-angle formula
which is very similar to your answer less the parentheses.