anonymous
  • anonymous
sin 2z =0.23 -180≤ z ≤180. find the value of z to 1 decimal point
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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AravindG
  • AravindG
Are you allowed to use a calculator?
anonymous
  • anonymous
yes
AravindG
  • AravindG
You could try this: \[\large \sin 2 z=\dfrac{2\tan z}{1+\tan^2 z}\] You get a quadratic in z. Solve for it. Or simply take sin inverse on both sides.

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anonymous
  • anonymous
okay..sin 0.23=13.3 and the question wants angle if it rotates -180 and 180..
AravindG
  • AravindG
Actually the answer you get will be in range: |dw:1378698928916:dw|
AravindG
  • AravindG
So multiply the whole inequality by 2 to get the required inequality.
AravindG
  • AravindG
Got it?
anonymous
  • anonymous
yup..thanks alot
AravindG
  • AravindG
yw :) and WELCOME TO OPENSTUDY!
anonymous
  • anonymous
Thank you...nice to meet you via openstudy
AravindG
  • AravindG
Same here..Seeya around!
anonymous
  • anonymous
(y) see you later

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