Graph the function to find the stated characteristic of the graph.Graph f(t) = - cos (?t + 
) + 3 in 
by 
. State the period.
A. 
B. 2
C. ?
D. 4
Answer: B
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Solve the problem.Two boats are pulling a disabled vessel toward the landing dock with forces of 840 lb and 820 lb. The angle between the forces is 29.6°. Find the direction and magnitude of the equilibrant.
A. 1605 lb at an angle of W 75.4° Nwith the 820-lb force B. 1605 lb at an angle of W 14.6° N with the 840-lb force C. 1605 lb at an angle of N 14.6° W with the 840-lb force D. 160 lb at an angle of N 75.4° W with the 840-lb force
Decide whether the pair of lines is parallel, perpendicular, or neither.3x - 2y = 32x + 3y = 7
A. parallel B. perpendicular C. neither
Factor completely.2x3 + 6x2y - 20xy2 = 2x( 
)( 
)
A. x + 4y, x - 5y B. x + 2y, x - 5y C. x + 4xy, x - 5y D. x - 2y, x + 5y
Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
sin (csc-1 u)
A. 
B. u
C. 
D. 