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 2010-02-18 04:59:15
- ihatemathyes
- Member
- Registered: 2010-02-18
- Posts: 1
plzzz...difficult trigonometry problem
ok so a x cos(alpha)=b x cos(beta)
how to certify that the triangle where alpha and beta angles are is Isosceles???? this is how i solved the problem
:(from the concludion we can say that alpha and beta are = and that a and b are also equal=>cos alpha=cos beta.....thus means that axcos(alpha)=bxcos(beta).........................is this valid???(thnx for reading and sorry for my bad english :S:S:S
Offline
#2 2010-02-18 05:33:57
- John E. Franklin
- Member
- Registered: 2005-08-29
- Posts: 3,588
Re: plzzz...difficult trigonometry problem
I agree with you.
For the sine wave to be exact with the other sine wave, the
amplitude, wavelength, and starting waveshift all have to be the same.
igloo myrtilles fourmis
Offline
Pages: 1