- #1
thenewbosco
- 187
- 0
Today the professor wrote down the following for use in an integral:
[tex]\frac{1}{2}cos(2\theta)=sin\theta cos\theta[/tex]
i am not sure is this is correct. i have tried to prove this and cannot, i have also not found it in an table of trig identities. Is this a valid identity? i am not sure since this prof always makes mistakes
[tex]\frac{1}{2}cos(2\theta)=sin\theta cos\theta[/tex]
i am not sure is this is correct. i have tried to prove this and cannot, i have also not found it in an table of trig identities. Is this a valid identity? i am not sure since this prof always makes mistakes