help with this question - differentiating trig (1 Viewer)

[frippyful]

differentiate with respect to x:
(1-cosx)cubed.

i am not really sure how to differentiate the cosx. i think either ive forgotten or i havent learnt it.
can someone please explain it to me.
thanks

 

[Mature Lamb]

d/dx (cos(x)) = -sin(x)

 

[Carrotsticks]

 

[frippyful]

okay no i havent learnt this yet. sorry for your troubles