Question

Trig identity help?

Answer 1

\[\frac{{ - 6{{\left( {\cos \left( t \right)} \right)}^2} \cdot \sin \left( t \right)}}{{6{{\left( {\sin \left( t \right)} \right)}^2} \cdot \cos \left( t \right)}} =- \cot(t)\]

Answer 2

just cancel, 6,sint and cos t, from numerator and denominator,what remains ?

Answer 3

Can you simplify fractions?

Answer 4

oh man...

Answer 5

how did I not see that... embarrassing.. thanks for the help

Answer 6

welcome ^_^

Answer 7

hey @hartnn, when taking second derivatives of parametric curves, we use a formula like: I am allowed to just take the derivative of -cot(t) or do I have to use y dot and x dot??