Answer: 
Step-by-step explanation:
You need to remember the Product of powers property:

Then, knowing this property, now you have to apply the Distributive property. So:

Finally, to simplify this expression, you need to add the like terms.
Therefore, you get that the product is:

Answer:
c
Step-by-step explanation:
you just multiply in the calculator
Answer:
This should definetly b more points
Step-by-step explanation:
Well knowing that the terminal arm of the standard position angle is in quadrant 2, we can determine the reference angle, in quadrant 2, by simply taking the difference between 180 and whatever the angle is.
So ø reference = 180 - ø in standard position.
Regardless, the reference angle is in quadrant 2, we need to then label the sides of the reference triangle based on the opposite and hypotenuse.
Solve for adjacent side using Pythagoras theorem.
A^2 = C^2 - B^2
A^2 = 3^2 - 2^2
A^2 = 9 - 4
A^2 =5
A = sq root of 5.
Then write the cos ratio using the new side.
Cos ø =✔️5/3. Place a negative in front of cos ø as cos is negative in second quadrant.