Use De Moivre's theorem to simplify the expression. Write the answer in the form a + bi.(cos 30° + i sin 30°)6
A. -1
B. i
C. -i
D. 1
Answer: A
Mathematics
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Evaluate the expression.[4 + (-4)] + (-5 + 8)
A. 13 B. -13 C. 3 D. 21
Mathematics
Find the least common multiple (LCM) of the pair of numbers.5 and 20
A. 5 B. 100 C. 25 D. 20
Mathematics
Find the value of the function.Given f(x) = 3x2 + 5x - 4, find f(-1).
A. -6 B. 2 C. -8 D. 4
Mathematics
Find the inclination 
(in radians and degrees) of the line passing through the points. Round your answer to four decimal places for radians and round your answer to one decimal places for degree.
?
?
A. 
?
B. 
C. 
D. 
E. 
Mathematics