Let (-3, 2) be a point on the terminal side of θ. Find exact values of cosθ, cscθ, and tanθ?

Calculus
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Let (-3, 2) be a point on the terminal side of θ. Find exact values of cosθ, cscθ, and tanθ?

May 11th, 2015

r^2=x^2+y^2=(-3)^2+(2)^2 

=9+4=13 

r=sqrt(13) 

sin is positive

sin(theta)=y/r= 2/sqrt(13) = 0.5547

csc is positive

csc(theta)=r/y=sqrt(13)/2 = 1.8028

tan is negative

tan(theta)= x/y=-3/2 = -1.5

May 11th, 2015

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