Find the exact value using a double-angle identity.cos 
A. 1
B. -1
C. 0
D. - 
Answer: C
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Find the largest of three consecutive whole numbers such that twice the sum of the two smallest numbers is 10 more than three times the largest number.
A. 18 B. 14 C. 15 D. 17 E. 16
Solve the problem.A package of relief supplies is dropped and moves according to the parametric equations 
and y = -4.9t2, where distances are in meters and time is in seconds. Find the magnitude and direction of the velocity when 
A. 52 m/s, 321.2° B. 52 m/s, 141.2° C. 64 m/s, 141.2° D. 64 m/s, 321.2°
Let 
. Find the value of the given capital letter.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Parametric equations and a value for the parameter t are given. Find the coordinates of the point on the plane curve described by the parametric equations corresponding to the given value of t.x = t3 + 2, y = 7 - t4; t = 2
A. (15, -14) B. (10, -9) C. (10, 23) D. (15, -1)