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Let (-3, -4) be a point on the terminal ...

Let (-3, -4) be a point on the terminal side of `theta`. Find the sine, cosine and tangent of `theta`.

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The correct Answer is:
`sintheta=-4/5,costheta=-3/5,tantheta=4/3`
Here `x=-3,y=-4`
Terminal angle `theta`lies in the third quadrant.
Now, `r=sqrt(x^2+y^2)=sqrt((-3)^2+(-4)^2)=sqrt25=5`
`:. sintheta =y/r=-4/5`
`costheta =x/r=-3/5`
`tantheta =y/x=4/3`
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