anonymous
  • anonymous
which is the standard form of the equation with p=18, phi =5pi/4?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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skullpatrol
  • skullpatrol
check the question please
Haseeb96
  • Haseeb96
Is this question complete ?
anonymous
  • anonymous
this question is complete.. its trig identities.. so we're going off of the equation x cos phi + y sin phi - p=0

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Ali0094
  • Ali0094
what does PHI mean?!!
skullpatrol
  • skullpatrol
how was the question complete when you did not give the equation?
anonymous
  • anonymous
phi looks like this... \[\phi \]
anonymous
  • anonymous
because you are just suppose to know it... this was the question lol
1 Attachment
skullpatrol
  • skullpatrol
|dw:1433104243974:dw|
Ali0094
  • Ali0094
what a hard question...lol
anonymous
  • anonymous
thats correct @skullpatrol .. and then what i did next was convert the radian 5pi/4 into degrees to make it easier to simplify
skullpatrol
  • skullpatrol
good, what did you get?
anonymous
  • anonymous
i got 225 degrees.. which simplifys each cos and sin to -sqrt2/2 i believe
skullpatrol
  • skullpatrol
ok, substitute the value into the equation please :)
anonymous
  • anonymous
|dw:1433104713424:dw| and then we'd times the whole thing by -2 to further simplify....correct...?
skullpatrol
  • skullpatrol
|dw:1433104740209:dw|
skullpatrol
  • skullpatrol
what happened to the variable "y"?
anonymous
  • anonymous
oh sorry i forgot it... lol
anonymous
  • anonymous
anyway.. id get the final equation \[\sqrt{2}x+\sqrt{2}y+36 \] right?
skullpatrol
  • skullpatrol
that^ is not an equation, it is an expression
anonymous
  • anonymous
=0 on the end
skullpatrol
  • skullpatrol
an equation has an equals sign, right?
anonymous
  • anonymous
hahaha so ive been told..
skullpatrol
  • skullpatrol
and the signs are not right :(
anonymous
  • anonymous
wait really? whys that
skullpatrol
  • skullpatrol
|dw:1433105082303:dw|
anonymous
  • anonymous
|dw:1433105127782:dw| this is what i did
skullpatrol
  • skullpatrol
|dw:1433105213074:dw|
anonymous
  • anonymous
okay... besides from correcting ever single minor thing.. i believe i did this problem correct. thanks for your time
skullpatrol
  • skullpatrol
You're answer is right :)
skullpatrol
  • skullpatrol
thanks for trying to learn
skullpatrol
  • skullpatrol
I apologize for "correcting every single minor thing..."

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