1
00:00:00,770 --> 00:00:06,980
Let's do this question if one of the angles of a triangle is a hundred and ten degree, then the angle

2
00:00:06,980 --> 00:00:11,510
between the bicyclers of the other two angles is all right.

3
00:00:11,780 --> 00:00:14,810
Also the video, give it a try and then let's do it together.

4
00:00:15,200 --> 00:00:15,590
All right.

5
00:00:15,590 --> 00:00:16,090
We are back.

6
00:00:16,460 --> 00:00:19,250
So let me draw a triangle, ABC over here.

7
00:00:19,520 --> 00:00:24,050
And it's given that one of the angles is equal to a hundred and ten degrees.

8
00:00:24,410 --> 00:00:24,890
All right.

9
00:00:25,010 --> 00:00:31,370
Now let's draw the angle by sectors of the other two angles and they are intersecting over here.

10
00:00:31,760 --> 00:00:37,010
Now, let's mark these three angles as angle one and two and angle three.

11
00:00:37,340 --> 00:00:41,480
Now, the question is, we need to find angle three right now.

12
00:00:41,490 --> 00:00:49,040
Let's press on we know angle A plus angle B plus angle is equal to 180 degrees as per the angle, some

13
00:00:49,040 --> 00:00:50,590
property of a triangle.

14
00:00:50,870 --> 00:00:55,940
So hundred and ten plus angle B plus angle sees equal to 180 degrees.

15
00:00:56,240 --> 00:01:01,670
Or we can say that angle B plus Anglesey is equal to 70 degrees.

16
00:01:02,030 --> 00:01:02,540
All right.

17
00:01:02,750 --> 00:01:10,490
Now, because this railway here is the angle by sector of angle B, therefore I can see that angle one

18
00:01:10,490 --> 00:01:12,950
is equal to half of angle B.

19
00:01:13,280 --> 00:01:19,040
Similarly, angle two is equal to half of angle C right now.

20
00:01:19,220 --> 00:01:20,990
Let's name this as all.

21
00:01:21,200 --> 00:01:28,430
Now all we see is a triangle right there for angle one plus angle two plus angle three is equal to 180

22
00:01:28,430 --> 00:01:28,760
degrees.

23
00:01:29,120 --> 00:01:36,290
Now let me substitute in sort of angle one, angle B by two and instead of angle to angle see by two.

24
00:01:36,320 --> 00:01:43,340
So that gives us angle B plus angle see by two plus angle three is equal to 180 degrees.

25
00:01:43,430 --> 00:01:47,230
Right now we know angle B plus angle is 70 degrees.

26
00:01:47,510 --> 00:01:55,400
So angle B plus angle C by two is seventy by two to seventy by two plus angle three is equal to 180

27
00:01:55,400 --> 00:02:02,750
degrees, 70 by two is thirty five to angle three is equal to 180 minus thirty five, which is equal

28
00:02:02,750 --> 00:02:04,720
to one forty five degrees.

29
00:02:04,910 --> 00:02:07,340
So your answer is option the.