pottersheep
  • pottersheep
I need help please for this Trig equation!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
pottersheep
  • pottersheep
How do I do tan2x = -1 between -2pi<=x<=2pi ??
cwrw238
  • cwrw238
first find all values of 2x whose tan = -1 in the range -4pi to 4pi then divide by 2
cwrw238
  • cwrw238
first find all values of 2x whose tan = -1 in the range -4pi to 4pi then divide by 2

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pottersheep
  • pottersheep
My values dont match the teachers, well my negative values dont
cwrw238
  • cwrw238
|dw:1353876122189:dw|
cwrw238
  • cwrw238
|dw:1353876122189:dw|
pottersheep
  • pottersheep
Yup okay so 3pi/4 and 7pi/4
cwrw238
  • cwrw238
the 2 values of x between 0 and 2pi are 4p-/4 and 7pi/4 - yes
cwrw238
  • cwrw238
* 3pi/4
pottersheep
  • pottersheep
can you help me find al the values though please
cwrw238
  • cwrw238
values of 2x are 3pi/4,7pi/4, 3pi/4 + 2pi, 7pi/4 + 2pi, -pi/4, -5pi/4, -pi/4 - 2pi, -5p i/4- 2pi ill let you simplify some of those values of x are half of these
cwrw238
  • cwrw238
values of 2x are 3pi/4,7pi/4, 3pi/4 + 2pi, 7pi/4 + 2pi, -pi/4, -5pi/4, -pi/4 - 2pi, -5p i/4- 2pi ill let you simplify some of those values of x are half of these
pottersheep
  • pottersheep
Thank you!! That's what I got too but thats not what my teacher did so I got confused!

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