Find the exact value of the indicated trigonometric function of ?.tan ? = - 
, 270°< ? < 360°Find cos ?.
A. -15
B. 
C. - 
D. 
Answer: C
Mathematics
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Find the difference.-14.7 - (-1.3)
A. -16 B. -13.4 C. 13.4 D. 16
Mathematics
Solve the equation.n2 - 196 = 0
A. {14} B. {0, 14} C. {-14, 14} D. {-14}
Mathematics
Solve the problem.A wheel with radius 3 m rolls at 20 rad/s. How fast is a point on the rim of the wheel rising when the point is 
radians above the horizontal (and rising)? (Round your answer to one decimal place.)
A. 15.0 m/s B. 30.0 m/s C. 60.0 m/s D. 120.0 m/s
Mathematics
Write the imaginary numbers using the letter i.
A. ±50
B. 50i
C. 
i
D. -50i
Mathematics