Summersnow8
Use fundamental identities to find exact values of the remaining trig functions given that sec x=11/9 , tan x < 0?



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AravindG
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sec x=11/9
so both sec x and cos x are positive

AravindG
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tan x<0
means sin x<0 from above observation

AravindG
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Hence the angle lies in 4th quadrant

AravindG
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Now just use the right triangle and find all other trigonometric ratios. Don't forget to put correct sign according to 4th quadrant.

Summersnow8
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I tired doing that, but it wasn't correct. I found cosine x = 9/11, but the others I cant find

AravindG
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dw:1372184147001:dw

AravindG
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Use the triangle :)

Summersnow8
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hmmm. okay