I think it’s c............
Answer: see proof below
<u>Step-by-step explanation:</u>
Use the Double Angle Identity: cos 2A = 2cos²A - 1
Use the Difference Identity: cos (A - B) = cosA · cosB + sinA · sinB
Use the Unit Circle to evaluate: cos (π/2) = 0 & sin (π/2) = 1
<u>Proof LHS → RHS</u>

LHS = RHS: sin A = sin A 
Answer:
1st one
Step-by-step explanation:
The correct symbol would be a >
<h2>How to find the cost per can</h2>
To find the cost per can, we can divide the total cost by the number of cans.

<h2>
Let's start with BiLo:</h2>
Total cost: $5.55
Number of cans: 12
The cost per can will be:

$0.4625 per can
How about Food Lion?
<h2>Food Lion</h2>
Total cost: $2.75
Number of cans: 6
The cost per can will be:

Around $0.4583 per can
<h2>Comparing</h2>
BiLo: $0.4625
Food Lion: around $0.4583
As we can see, Food Lion has a better cost per can, as it costs less to buy each can of Pepsi.
Answer: Food Lion has a better cost per can