All you do is subtract 3.2 from the number 4 and you get the number -0.8
Answer:
B
Step-by-step explanation:
Answer:
I think it is A.
Step-by-step explanation:
Hope my answer has helped you!
Use the half angle identity: cos(A/2)=+/- √[(1+cosA)/2]
π/12 is half of π/6, and cosπ/6=√3/2, so
cons(π/12)=√[(1+√3/2)/2]=(1/2)√(2+√3)
C is the answer.
