Summersnow8
  • Summersnow8
Use fundamental identities to find exact values of the remaining trig functions given that sec x=11/9 , tan x < 0?
Mathematics
chestercat
  • chestercat
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AravindG
  • AravindG
sec x=11/9 so both sec x and cos x are positive
AravindG
  • AravindG
tan x<0 means sin x<0 from above observation
AravindG
  • AravindG
Hence the angle lies in 4th quadrant

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AravindG
  • AravindG
Now just use the right triangle and find all other trigonometric ratios. Don't forget to put correct sign according to 4th quadrant.
Summersnow8
  • Summersnow8
I tired doing that, but it wasn't correct. I found cosine x = 9/11, but the others I cant find
AravindG
  • AravindG
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AravindG
  • AravindG
Use the triangle :)
Summersnow8
  • Summersnow8
hmmm. okay

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