Verify the identity.sin4t = 2 sin2t cos2t
What will be an ideal response?
sin 4t = sin [2(2t)] = 2 sin2t cos2t.
Mathematics
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Find the vector projv u.v = k, u = 2i + 6j + 9k
A. 
i + 
j + 
k
B. 
k
C. 
i + 
j + 
k
D. 9k
Mathematics
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Solve.The population of a small town in 1988 was 13,000 people. Due to decline in industrial growth the population has since been decreasing at a rate of 3% every year. What was the population of this town in 1998?
A. 10,622 people B. 8643 people C. 7784 people D. 9587 people
Mathematics
Solve.96 ? m = 19,008
A. 198 B. 18,912 C. 199 D. 18,911
Mathematics