00:01
Okay, this i want to solve for other verify.
00:05
So left -hand side, we'll start there.
00:08
Left -hand side is sine squared theta minus, and tan -theta, i can write sine theta divided by cos -theta.
00:19
All over, cos -squared theta.
00:23
And cot -theta, i can write cos -theta over sine - theta.
00:29
That's the first step.
00:30
Change tan and cot into terms of sign and cos.
00:36
Now next step, multiply top and bottom by the same thing, so no change overall.
00:44
And the idea is to remove these two items here.
00:48
So multiply here by sign theta, cos theta, and here, sign theta, cos theta.
00:58
And we get on top, sine cubed theta, times quid theta, cos theta minus sine squared theta.
01:11
In other words, this time that term is sine cube cos.
01:17
And times this term, i will cancel out...