Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
| Geometry
2 Answers Below
Anyone can contribute an answer, even non-tutors.
Angle question
Date Posted: 1 month ago
Views: 39
See 2 Answers
Note that OB=OC=OA=radius.
Triangle OBC is an isosceles triangle with angle OBC=angle OCB=65
Angle BOC=180 - 65 - 65 = 50(sum of triangle is 180)
Angle AOB= 180 - 50 = 130(angle on str line)
See that triangle OAB is another isosceles triangle with OA=OB.
Angle BAC= (180 - 130)/2 =25.
Triangle OBC is an isosceles triangle with angle OBC=angle OCB=65
Angle BOC=180 - 65 - 65 = 50(sum of triangle is 180)
Angle AOB= 180 - 50 = 130(angle on str line)
See that triangle OAB is another isosceles triangle with OA=OB.
Angle BAC= (180 - 130)/2 =25.
Thank you.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hope the explanation helps!
Date Posted:
1 month ago
Thank you.
360 Tutoring Program