## satellite73 3 years ago disgrace of the day

1. satellite73

2. satellite73

from a question last night. what's wrong with this picture?

3. gaara438125

it says triangles?

4. sauravshakya

The given angle should have been more than pi/4

5. Miyuru

|dw:1349963634731:dw|

6. UnkleRhaukus

if π/6 is an angle in a right angled triangle then is it the smallest angle

7. sauravshakya

Oh it is not a right angled triangle.

8. Miyuru

@satellite73 is the angle given in radian then the angle would be 30

9. TuringTest

@Unkle it does say "not drawn to scale though"

10. satellite73

then later when you are asked to "solve" a triangle it is impossible, because no one can draw the damn thing would the same moron who gave this problem draw a rectangle and label as follows |dw:1349963756626:dw|

11. satellite73

not drawn to scale is no excuse you cannot make $$\frac{\pi}{6}$$ larger than $$\frac{\pi}{3}$$ it just doesn't make sense

12. Miyuru

ohh man all these guys are greatest ones in OS

13. gaara438125

it still says triangles not drawn to scale...which is plural and i only see one >.>

14. sauravshakya

So, u mean to say not enough information given in the figure to say it is a right angled triangle.

15. satellite73

no i mean the question is designed to confuse. the long side of the triangle is shorter than the short side. it is insane

16. lgbasallote

just another reason to hate math

17. Miyuru

Is this a question to confuse everyone

18. sauravshakya

Yeah..... So, I said the given angle must be greater than pi/4

19. UnkleRhaukus

|dw:1349963986971:dw|

20. satellite73

if you want to test this kind of knowledge, and for some reason don't want a visual clue then simply ask " if the side adjacent to an angle of $$\frac{\pi}{6}$$ in a right triangle is 5 units long, find the lenght of the other sides

21. satellite73

@lgbasallote another reason to hate math teachers ok rant is done, thanks for listening

22. UnkleRhaukus

maybe the perspective is just strange

23. Miyuru

It's not mentioned that the triangle is a right-angled. :)

24. estudier

Advice to teachers: "Make sure that students appreciate that diagrams can be misleading etc etc.." Duh....

25. satellite73

advice to teachers: since it is clear that $$3<6$$ you would think your students rather simple if they drew a rectangle and labelled the short side 6 and the long side 3, because that is just stupid by the same token, don't prove yourself just as stupid by making an angle of 30 degrees twice the side of an angle of 60 degrees, and then be amazed when a) they cannot solve your problem b) they cannot solve a right (or general) triangle because they are unable to draw a decent picture first

26. estudier

Yes, excellent. I am of the opinion that diagrams, if treated with the same care as anything else in mathematics, add value.