I was reading on planetary motion and have gotten hung up on a "rearrangement of terms" that the author skimmed over. It reads that:
r=e(k+rcos(θ))=(ek)/(1-ecos(θ))
It's been a while since I've been in a math class: I just can't follow how to get from a to b. Is there anyone who can walk me through this like I'm twelve?
Thanks!
r=e(k+rcos(θ))=(ek)/(1-ecos(θ))
It's been a while since I've been in a math class: I just can't follow how to get from a to b. Is there anyone who can walk me through this like I'm twelve?
Thanks!