plz answer this question
Attachments:
shambhavirai:
19 or 20?
what is the question
sorry i thought u asked me a question
it's question 19
Answers
Answered by
1
You have marked them correctly.
Now first we have,
x + 2x + 2y = 180 (Angle Sum Property of a triangle)
Now look at the sides of the triangles ABE and DCE
Both the triangles are similar.
2y/x = 2x/x
2y/x=2
2y=2x
y=x
Using this in the previous equation , we get
3y + 2y = 180
5y = 180
y = 36
Angle BAC = 2y = 2*36 = 72
Hope it helps :)
Now first we have,
x + 2x + 2y = 180 (Angle Sum Property of a triangle)
Now look at the sides of the triangles ABE and DCE
Both the triangles are similar.
2y/x = 2x/x
2y/x=2
2y=2x
y=x
Using this in the previous equation , we get
3y + 2y = 180
5y = 180
y = 36
Angle BAC = 2y = 2*36 = 72
Hope it helps :)
Similar questions