Answer:
#2 option: 
Step-by-step explanation:


= 
Answer:
Step-by-step explanation:
Given that angle A is in IV quadrant
So A/2 would be in II quadrant.
sin A = -1/3
cos A = 
(cos A is positive since in IV quadrant)
Using this we can find cos A/2

Answer:
that is scientifically impossible
Step-by-step explanation:
one you can't add, subtract, round up, or use decimals write that down.
Answer:
4
Step-by-step explanation: