00:01
All right, so instead of writing secant, co -secant, i'm just going to start off with one over the reciprocal of secant is cosine of a.
00:12
And instead of writing co -secant, i'm going to write one over sign.
00:19
And then is it minus tangent as sign over cosine.
00:27
And instead of writing the last one of cotangent, i'm going to write that as cosine over sign.
00:32
And hopefully that makes sense.
00:34
I just rewrote everything in terms of signs and cosines.
00:37
So now when i'm looking at this, i see that all my terms at least have a sign or a cosine.
00:42
So as i'm trying to add them together, i'm going to have a sign a cosine a.
00:48
So this left fraction that i'm circling right now already has that as a denominator.
00:53
So i'm not doing anything with the numerator.
00:56
But this middle fraction, you see how i only have a cosine in the denominator.
01:01
So i need to multiply by sign on top and by.
01:05
Bottom to get the same denominator...