Answer:
cos(pi/2) + i sin (pi/2)
Step-by-step explanation:
(1+i)/ (1-i)
Multiply top and bottom by (1+i)
(1+i) (1+i)/ (1-i)(1+i)
Foil the top (1+i)(1+i) = 1 +2i +i^2 = 1 +2i -1 = 2i
Foil the bottom ( 1+i)(1-i) = 1 - i^2 = 1 - (-1) =2
2i/2 = i
the magnitude is (0^2+1^2) = 1
The angle is tan^-1( 1/0) = pi/2
cos(pi/2) + i sin (pi/2)
Answer:
A;.........9 a.m. - Gary; 12 p.m. - Rachel; 3 p.m. - Christopher; 6 p.m. - Hannah
Step-by-step explanation:
Answer:
Rational
Step-by-step explanation:
See pic below ↓
It could be 20 times or 25 times
Answer:
6, 8, 10, 12, 18, 20
Mean: 6 + 8 + 10 + 12 + 18 + 20 = 74/6 = <em>12.3</em>
Median: <em>11</em>
Mode: <em>there are no mode in the following listed numbers or data set.</em>
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~hope this helps~
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