Find the exact value, given that sin A = -4/5 with A in quadrant IV, 
with B in quadrant III, and 
with C in quadrant II.tan 2C
A. 
B. 
C. 
D. 
Answer: D
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Perform the indicated operations and simplify.
+ 
- 
A. 
B. 
C. 
D. 
A helicopter makes a forced landing at sea. The last radio signal received at station C gives the bearing of the helicopter from C as at an N 57.1º E altitude of 423 feet. An observer at C sights the helicopter and gives 
as 12.1º. How far will a rescue boat at A have to travel to reach any survivors at B (see the figure)? Apply the rules regarding the use of significant digits when determining your answer. Round your answer to the nearest ten feet.
?
?
Distance rescue boat travels = __________ ft
Fill in the blank(s) with the appropriate word(s).
Graph the function.f(x) = 5-x
A. 
B. 
C. 
D. 
Factor the expression completely. If the polynomial is prime, state this as your answer.49a2b4 - 
c8
A. 
2
B. 
C. 
2
D. prime