Please note that in proving this, I have used trigonometric identities other than just the sine angle-addition formula.
Answer:x-4
Step-by-step explanation:because (-1)x(-1)=1
It would be 1/3 because there are three ingredients. Therefore, if he is allergic to one of everything in each category, there are 3/10 things he is allergic to.
7 to 11 because you divide both sides by 3