anonymous
  • anonymous
so so very lost with this. Find the reference angle for the given angle. (a) 10π/3 (b) 33π/4 (c) −35π/6 I would like to understand how to do one of them at least.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
just subtract multiples of 2pi so that 0
anonymous
  • anonymous
or add, if original is negative
anonymous
  • anonymous
so for A) i got \[-4\pi/3\]

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anonymous
  • anonymous
but that was the wrong answer
anonymous
  • anonymous
i did that for A, B, and C. but i got the wrong answers
anonymous
  • anonymous
is \[ 0<\frac {-4 \pi}{3}< 2\pi\]
Psymon
  • Psymon
|dw:1378102612477:dw|
Psymon
  • Psymon
So since the distance between your line of 10pi/3 and the x-axis is pi/3, the reference angle is pi/3
anonymous
  • anonymous
ok so for B would is just be pi/4
anonymous
  • anonymous
http://www.mathopenref.com/reference-angle.html sorry for the misinfo
Psymon
  • Psymon
|dw:1378102794066:dw|
Psymon
  • Psymon
|dw:1378102846876:dw|
anonymous
  • anonymous
ok and for C its pi/6 or -pi/6
anonymous
  • anonymous
\[ 0 \le \text{ ref angle} \le \frac {\pi}{2}\]
anonymous
  • anonymous
wait why is it not -pi/6
Psymon
  • Psymon
And yeah, has to be between 0 and pi/2 xD
Psymon
  • Psymon
Well, pi/6 and -pi/6 have the same distance absolute valuewise, but we always use positive angles.
anonymous
  • anonymous
ok
anonymous
  • anonymous
thanks so much for the help.
Psymon
  • Psymon
Yeah, np ^_^
anonymous
  • anonymous
since i know how to do it in degrees. cant i convert the rad. into degrees and just do it that way and then convert it back.
anonymous
  • anonymous
or would that be too much work. i just get lost with rad.
Psymon
  • Psymon
If you wanted to do so. I mean, Id just keep it in radians since its easier. I guess it just depends on what is asked of you.
anonymous
  • anonymous
ok well thanks again. your pretty awesome. lol
Psymon
  • Psymon
Just glad I could help xD

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