1
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Students now we shall study how the ratios are defined.

2
00:00:10,670 --> 00:00:15,180
That is what do we mean by esign costs etc..

3
00:00:16,460 --> 00:00:23,720
For this we shall define Alte ratios of an angle in triangle ABC.

4
00:00:23,780 --> 00:00:24,470
Correct.

5
00:00:24,890 --> 00:00:31,280
So in triangle ABC we have taken this triangle ABC it is writing that.

6
00:00:31,730 --> 00:00:39,990
So for this angle A OK this will be the opposite side of a particular.

7
00:00:39,990 --> 00:00:41,630
This will be the best.

8
00:00:42,160 --> 00:00:42,560
OK.

9
00:00:42,600 --> 00:00:47,290
And the site is he would be the hypothenuse which is the longest site.

10
00:00:47,670 --> 00:00:57,960
So I can walk as he has hypothenuse but mainly Iglauer which can be presented in short as as B C and

11
00:00:58,280 --> 00:00:59,950
base as B.

12
00:01:00,360 --> 00:01:09,460
Ok so this side AB and chart can be represented by B which is the edges inside our base.

13
00:01:10,110 --> 00:01:13,890
OK students first.

14
00:01:13,920 --> 00:01:16,040
A sure sign of angle.

15
00:01:16,380 --> 00:01:17,350
OK.

16
00:01:17,600 --> 00:01:21,030
D ratios are always defined for some angle.

17
00:01:21,370 --> 00:01:21,870
OK.

18
00:01:23,560 --> 00:01:25,610
VENEZ is sign alone.

19
00:01:25,730 --> 00:01:32,750
I apparently mean that I have taken a ratio of the perpendicular and hypothenuse with respect to an

20
00:01:32,840 --> 00:01:33,560
angle.

21
00:01:33,880 --> 00:01:42,950
OK Gary shows have a complete meaning when they are taken for some angle for example.

22
00:01:42,950 --> 00:01:52,670
Here we have taken the sign off angle so sign has only the complete meaning when it is taken for some

23
00:01:52,820 --> 00:01:53,510
angle.

24
00:01:53,850 --> 00:01:54,340
OK.

25
00:01:55,370 --> 00:02:05,820
So the first D ratio is sign off and it is defined as the ratio of side opposite to angle.

26
00:02:06,090 --> 00:02:07,590
Do I put.

27
00:02:07,950 --> 00:02:16,850
OK so the side of the triangle is B C and hypothenuse is so sign of angerly is equal to B C upon a C

28
00:02:17,780 --> 00:02:21,940
which can be added an s p upon edge perpendicular upon hypothenuse.

29
00:02:22,220 --> 00:02:24,890
And in short it is written as sign.

30
00:02:25,240 --> 00:02:28,590
When I say sign a I mean sign off and.

31
00:02:29,940 --> 00:02:32,460
Looking like vase V.

32
00:02:32,540 --> 00:02:35,370
Define other ratios.

33
00:02:35,390 --> 00:02:43,760
Second the ratio is because I know the angle it is the ratio of the side adjacent to ngi to hypotenuse

34
00:02:44,910 --> 00:02:52,260
which is equal to AB of on a C which can be added in as equal to B upon edge.

35
00:02:52,260 --> 00:02:53,910
That is based upon what news.

36
00:02:53,910 --> 00:02:57,930
And in short it is written as cossie again.

37
00:02:58,060 --> 00:03:01,120
I know vongole means cause.

38
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OK.

