Find the exact value of the trigonometric function. Do not use a calculator.cos 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Graph the system of inequalities. Shade the region that represents the solution set.x2 + y ? 2x2 - y ? 1
A. 
B. 
C. 
D. 
Mathematics
Add or subtract. Simplify your answer to lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The range r of a projectile is given byr = 
v2 sin 2?,where v is the initial velocity and ? is the angle of elevation. If r is to be 
and 
what must the angle of elevation be? Give your answer in degrees to the nearest hundredth.
A. 0.25° B. 89.82° C. 0.36° D. 0.18°
Mathematics
Divide and simplify.
A. 
B. 47m
C. 41m
D. 
Mathematics