SOLUTION: Why we should solve like this?
If {{{CosX = -1/2}}}
{{{CosX = Cos(2(pi))/3}}}
{{{X = 2n(pi) +- 2(pi)/3}}}
Why can't we solve like this???
{{{CosX = -1/2}}}
{{{Cos
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-> SOLUTION: Why we should solve like this?
If {{{CosX = -1/2}}}
{{{CosX = Cos(2(pi))/3}}}
{{{X = 2n(pi) +- 2(pi)/3}}}
Why can't we solve like this???
{{{CosX = -1/2}}}
{{{Cos
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Question 895850: Why we should solve like this?
If
Why can't we solve like this???
Because we can put minus sign inside in Cos...
???? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Why we should solve like this?
If
Why can't we solve like this???
---------------------------
cos(-x) <> -cos(x)
cos(-x) = cos(x)
****************************
Because we can put minus sign inside in Cos...
