If x = 2 tan ?, use trigonometric substitution to write 
as a trigonometric function of ?, where 
.
?
A. ?2 csc ?
B. ?2 sec ?
C. ?2 cos ?
D. ?2 tan ?
E. ?2 sin ?
Answer: B
Mathematics
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Solve the equation log 6 x = 2.
A. x = 64 B. x = 42 C. x = 2 D. x = 6 E. x = 36
Mathematics
Solve.Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 10 miles with the wind, and in the same amount of time runs 6 miles against the wind. What is the rate of the wind?
A. 1
mph
B. 2 mph
C. 20 mph
D. 5 mph
Mathematics
Use De Moivre's Theorem to find the indicated power of the complex number. Write your answer in standard form a + bi.(3(cos ?/2 + i sin ?/2))3
A. -9i B. 27i C. -27i D. 0
Mathematics
Find the angle rounded to the nearest tenth of a degree.tan B = 0.8081
A. B = 38.9 o B. B = 55.9 o C. B = 36.1 o D. B = 39.6 o E. B = 60.0 o
Mathematics