00:03
Okay, so we have the following drawing.
00:05
We have an angle of 29 and 61.
00:09
It's called us tension 1, tension 2.
00:13
And then there's a brick, 62 pounds.
00:19
Okay, so based on this, we know that tension 1 is cosine of 29 is equal to tension 2, which is cosine of 61.
00:28
We know that tension 1 sign of 29 plus tension 2, sine of 61, is equal to 62.
00:37
Let's solve for t1 on our top.
00:39
So we have t1 is equal to t2 over cosine 61 over cosine 29.
00:48
What is that? cosine of 61 degrees over cosine of 29.
00:53
That gives me approximately 0 .55t2.
00:58
Okay.
01:00
So let's plug in t1 so that's 0 .55t2.
01:07
Sine of 29 plus t2, sine of 61 is equal to 62...