Question

cos(alpha + beta) =0.5 then find sin(alpha +beta)​

Answer 1

Answer:$\sqrt{3}/2$

Step-by-step explanation:

cos($\alpha +\beta$)=0.5

cos($\alpha +\beta$)=cos60

$\alpha +\beta$=60

Therefore

sin($\alpha +\beta$)=sin60

sin($\alpha +\beta$)=$\sqrt{3}/2$