1. Use the Law of Cosines to find Angle A if the sides are: a=10, b=12, and c=16. Round Two Decimal Places.

A: A= 33.82°
B: A= 38.62°
C: A= 48.52°
D: A= 32.32°
E: No Solution

2. If u= <4,5> and v= <0,-1> , find 2v+5u.

A: <20,22>
B: <22,1>
C: <20,23>
D: <4,20>

3. Find the component form of the vector if the initial point if (1,5) and the terminal point is (15,9).

A: <4,11>
B: <4,12>
C: <14,-11>
D: <14,4>
E: No Solution

4. Find a unit vector in the direction of <0,-2>

A: <0,1>
B: <2,-1>
C: <4,1>
D: <0,-1>
E: No Solution

5. Using the Law of Cosines, find side b if Angle B=150°, a=10, and c=20. (Round Two Decimal Places)

A: b= 29.09
B: b= 9.90
C: b= 39.99
D: b= 40.90
E: No Solution