Find the values of the trigonometric functions of theta from
     Find the values of the trigonometric functions of theta from the information given.  cot(theta) = 1/2., sin (theta)  
  
  Solution
cot theta=1/2
adjacent=1 and opposite=2
hypotenuse=sqrt(1+4)=sqrt5
sin theta is negative it means theta is in third quadrant and in third quadrant cosine is negative too
sin theta=opposite/hypotenuse=-2/sqrt5
cos theta=adjacent/hypotenuse=-1/sqrt5
tan theta=1/cot theta=2
sec theta=1/cos theta=-sqrt5
csc theta=1/sin theta=-sqrt5/2

