Find u×v.
A. ?
B. 
C. 
D. ?
E. 
Answer: E
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Use the information given about the angle ? to find the exact value of the indicated trigonometric function.tan ? = 
, ? < ? < 
Find sin 
.
A. 
B. - 
C. 
D. - 
Write a proportion that models the situation described. Then, solve the proportion for x.11 is to 12, as 3 is to x
A. 
= 
; x = 
B. 
= 
; x = 
C. 
= 
; x = 
D. 
= 
; x = 
Solve the problem.A coin is tossed upward from a balcony 
high with an initial velocity of 
During what interval of time will the coin be at a height of at least 
(h = -16t2 + vot + ho.)
A. 0 ? t ? 1 B. 0 ? t ? 5 C. 4 ? t ? 5 D. 5 ? t ? 10
Solve the system of equations using the inverse of the coefficient matrix.
A. x = -1, y = 0, z = 1, w = 1 B. x = -3, y = -2, z = -3, w = 1 C. x = -3, y = 2, z = 3, w = -1 D. The system is inconsistent.