Divide and simplify to the form a + bi.
A. -2 + 2i
B. i
C. Undefined
D. 2 + 2i
Answer: B
Mathematics
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Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.a = 5, b = 9; find csc A.
A. 
B. 
C. 
D. 
Mathematics
Find all solutions of the equation in the interval [0, 2?). Round the solution to four decimal places.cot x = -2
A. {2.6779} B. {3.6052, 5.8195} C. {2.6779, 5.8195} D. {0.4636, 2.6779}
Mathematics
Use a graphing calculator to graph the hyperbola.2.7x2 - 5y2 = 13
A. y = ±
B. y = ±
C. y = ±
D. y = ±2.7
Mathematics
Multiply. Simplify and leave the numerator and denominator in your answer in factored form.
? 
A. 
B. 
C. 
D. 
Mathematics