Express the product as a sum or difference.cos 
cos 
A. 
(cos 6x - sin 5x)
B. 
(cos 5x + cos 6x)
C. 
(cos 12x - sin10x)
D. 
cos2 11x
Answer: B
Mathematics
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Solve the problem.The magnitudes and directions of two forces acting on an object are given. Find the magnitude of the resultant to the nearest tenth.71.8 lb; 10.9° W of Nand132.3 lb; 57.1° W of S
A. 97.5 lb B. 158.3 lb C. 111.1 lb D. 124.7 lb
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Solve the equation.3(3x - 1) = 12
A. 1
B. 
C. 
D. 
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Determine the quadrant in which the terminal side of angle ? lies.cos ? > 0 and csc ? < 0
A. Quadrant I B. Quadrant IV C. Quadrant III D. Quadrant II
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