Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2009-03-14 00:33:28
- Owen_kiddo
- Guest
Simple problem
This is supposed to be an easy problem but I cant figure out why the answer is not :
pi /3 - ( 1/2 + √3/2 )
Help me plz
#2 2009-03-14 00:49:56
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: Simple problem
The selected answer is right.
The curved part is 1/6 of the whole circle. The whole circle has a circumferene of 2π, so the curved length is π/3.
Trigonometry is used to show that the shorter straight side has length 1/2 and the longer straight side has length √3/2.
Why did the vector cross the road?
It wanted to be normal.
Offline
#3 2009-03-14 01:02:15
- Owen_kiddo
- Guest
Re: Simple problem
I get it now. Thank you mathsyperson.
Pages: 1