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