Rewrite #1 and make the cancellations.
Need help with these two, by tonight, if possible!
1) {sin^2x - tanx}/{cos^2x - cotx} = tan^2x
In words, sin squared x minus tan x all divided by cos squared x minus cotx equals tan squared x.
2) {sin^3x + cos^3x}/{1 - 2cos^2x} = {secx - sinx}/{tanx - 1}
In words, sin cubed x minus cos cubed x all divided by one minus two cos squared x equals sec x minus sin x all divided by tanx minus one.
Thanks in advance!