Is it me or is this problem really nasty?

[user1731]

I couldn’t even plug in the holes in this problem. What’s the way to go about it?

[Leaderboard]

Try dividing the triangle in such a way that you can make use of 30-60-90 triangle properties.

[user1731]

Isn’t this problem kinda unfair? You have no clue until you know the password?

[Leaderboard]

Password?