# algebra

cos x -1/2 x lies in the third quadrant find the other five trigonometery functions

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1. cos x - 1 / 2 x

can't lies in the third quadrant.

Go on:

wolframalpha . c o m

an type cos x - 1 / 2 x

you will see graph

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2. maybe you mean cos x = -1/2
Since cosθ = x/r, and θ is in QIII
y = -√3

sinθ = y/r = -√3/2
tanθ = y/x = √3
cotθ = x/y = 1/√3
secθ = r/x = -2
cscθ = r/y = -2/√3

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