Answer:
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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

1. 5/6
2. 3/4
3. 2/3
4. 1/6
5. 1/4
6. 1/2
The absolute value of -54 is 54.
So The answer is A
I did the first one.
a. The equation that you need to get DF.
b. Substitute the values in the equation.
c. Add up the rs and the numbers (to simplify).
d. divide both sides by 5 to get r.
e. The value of r is given.