The asnwer of this expression comes to be " 0.833 ".
I am not able to understand the method used to arrive at this asnwer. Please anybody give me the correct steps used here. It's urgent.....!
2007-03-29 06:44:35 · 4 answers · asked by Virendra P 1 in Science & Mathematics ➔ Mathematics
sin(180) = 0 and
cos(180) = -1
Therefore,
[1-1/4(cos180-j*sin180)] / [1-1/2(cos180-j*sin180)] =
[1-1/4(cos180)] / [1-1/2(cos180)] =
[1+1/4] / [1+1/2] =
[5/4]/[3/2] =
5/6 =
.83333333
2007-03-29 06:50:32 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I am also unable to get the answer 0.833. Instead I get the answer 3/4.
cos180= -1
sin180= 0
j^0 = 1
Substituing
[(1)-((1/4)(-1 -1))]/[(1)-((1/2)(-1 -1))] = (3/2)/(2) = 3/4
A minus sign is a minus sign and not a fraction separator in
a function.
2007-03-29 07:06:53 · answer #2 · answered by ? 5 · 0⤊ 0⤋
= [1 - 1 / 4.(-1)] / [ 1 - 1/2(-1) ]
= [5/4] / [3/2]
= [5/4] x [2/3]
= 5/6
2007-03-29 06:59:08 · answer #3 · answered by Como 7 · 0⤊ 0⤋
Okay. sin 180 = 0. cos 180=-1.
So your expression becomes:
[1-1/4(-1-0)]/[1-1/2(-1-0)], which you can simplify and see is 5/6=.8333333.
2007-03-29 06:51:00 · answer #4 · answered by jiyuztex 2 · 0⤊ 0⤋