SOLUTION: Verify the identity: cot^3θ+1/cotθ+1 = csc^2 θ-cotθ Which of the following shows the key steps in verifying the identity? https://www.dropbox.com/s/l2q

Algebra ->  Trigonometry-basics -> SOLUTION: Verify the identity: cot^3θ+1/cotθ+1 = csc^2 θ-cotθ Which of the following shows the key steps in verifying the identity? https://www.dropbox.com/s/l2q      Log On


   



Question 1103644: Verify the identity:
cot^3θ+1/cotθ+1 = csc^2 θ-cotθ
Which of the following shows the key steps in verifying the identity?
https://www.dropbox.com/s/l2q7ae6yt8knkbf/Screen%20Shot%202017-11-30%20at%209.27.44%20PM.png?dl=0

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
It is B.
Factor by sum of cubes and the second term of the trinomial has to be negative. None of the others had that and a positive constant in the third term.