Help please :D

two isosceles triangles are ACB and ADB have a common base AB, and their planes form an angle of 30 degrees. Find the distance DE between the vertex D and the plane containing triangle ABC if the height DF of triangle ADB is 16 cm.

Question

Help please :D

two isosceles triangles are ACB and ADB have a common base AB, and their planes form an angle of 30 degrees. Find the distance DE between the vertex D and the plane containing triangle ABC if the height DF of triangle ADB is 16 cm.

wcrmelissa2001 · Answer

Hey do you mind posting a drawing or photo so it's easier to visualise? Thanks

anonymous · Answer

|dw:1453725572242:dw|

anonymous · Answer

that's my idea about the figure but I'm not sure about it too :(

wcrmelissa2001 · Answer

where is DE?

wcrmelissa2001 · Answer

hmm...

anonymous · Answer

I'm not sure. But I think the E is the same with F but im not sure :(

wcrmelissa2001 · Answer

sorry i'm not even sure of the question itself

anonymous · Answer

Oh, thanks anyway :D But that is the question written in our book
 XD

wcrmelissa2001 · Answer

@perl