Use the imaginary unit to write the expression.
A. -2i
B. -2
C. 2
D. 2i
Answer: D
You might also like to view...
Solve the problem.The perimeter of a triangle is 62 cm. The triangle is isosceles now, but if its base were lengthened by 2 cm and each leg were shortened by 2 cm, it would be equilateral. Find the base of the original triangle.
A. 18 cm B. 22 cm C. 17 cm D. 20 cm
Find the indicated probability. Leave your answer in fractional form unless otherwise indicated.A class consists of 100 female students and 66 male students. One student is selected at random. What is the probability that the student is female?
A. 
B. 
C. 
D. 
Use the theoretical probability formula to solve the problem. Express the probability as a simplified fraction.You are dealt one card from a standard 52-card deck. Find the probability of being dealt a picture card.
A. 
B. 
C. 
D. 
In the problem, sin ? and cos ? are given. Find the exact value of the indicated trigonometric function.sin ? = 
, cos ? = 
Find cot ?.
A. 
B. 
C. 
D. 