SOLUTION: Factor; then use fundamental identities to simplify the expression below and determine which of the following is NOT equivalent. (cot^2)-(cot^2)(cos^2) I attempted to solve

Algebra ->  Trigonometry-basics -> SOLUTION: Factor; then use fundamental identities to simplify the expression below and determine which of the following is NOT equivalent. (cot^2)-(cot^2)(cos^2) I attempted to solve       Log On


   



Question 771935: Factor; then use fundamental identities to simplify the expression below and determine which of the following is NOT equivalent.
(cot^2)-(cot^2)(cos^2)
I attempted to solve and came out to (cot^2)(-sin^2)
not sure where to go after that
Not sure what it means by "which of the following is NOT equivalent" no further information is given, it is not a multiple choice.

Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
cotē(q) - cotē(q)·cosē(q)

Factor out cotē(q)

cotē(q)·[1 - cosē(q)]

Use the identity 1 - cosē(q) = sinē(q}

cotē(q)·sinē(q)

Use the identity cotq = cos%28theta%29%2Fsin%28theta%29

%28expr%28cos%28theta%29%2Fsin%28theta%29%29%29%5E2%2Asin%5E2%28theta%29

expr%28cos%5E2%28theta%29%2Fsin%5E2%28theta%29%29%2Asin%5E2%28theta%29

expr%28cos%5E2%28theta%29%2Fcross%28sin%5E2%28theta%29%29%29%2Across%28sin%5E2%28theta%29%29

cosē(q)

Edwin