Question

simplifying the trig expression

Answer 1

would it simplify to = -1 (cosh\[=-1/(\cos \emptyset-1)^2\]

Answer 2

Yes\[\dfrac{\cos\theta-1}{(1-\cos\theta)^3} = \dfrac{-1(1-\cos\theta)}{(1-\cos\theta)^3} = \dfrac{-1}{(1-\cos\theta)^2}\]

Answer 3

because the solution gives this

Answer 4

shouldn't it be :
−1/(1−cosθ)^2 < 0

Answer 5

You're absolutely correct!
let me double check it with wolfram

Answer 6

thanks

Answer 7

Yes, you're right. There is no way \(\dfrac{-1}{(1-\cos\theta)^2}\) simplifies to \(-(1-\cos\theta)^2\).