2007-10-17 02:43:44 · 8 answers · asked by moh55hus 2 in Science & Mathematics ➔ Mathematics
cos θ = 2 / 3
θ = 48.2° , 311.8°
You now HAVE the answer!
2007-10-17 22:39:50 · answer #1 · answered by Como 7 · 0⤊ 0⤋
cos(0) = 1, not 2/3
2007-10-17 02:46:36 · answer #2 · answered by Kaila G 3 · 0⤊ 0⤋
The answer for that question is simple....
I can't understand your equation..... but let's assume that:
A.) cos(0) is cosine 0 degree..then the answer is 1..
since its a special angle in which this angle states that as this angle approaches zero the opposite becomes zero while the adjacent and opposite becomes 1 because they're now equal...
Now applying the soh cah toa rule..(I dunno if you know this):
S O H stands for Sine (S) =Opposite (O) / Hypothenuse (H)
C A H stands for Cosine (C) = Adjacent (A) /Hypothenuse (H)
T O A stands for Tangent (T) = Opposite (O) / Adjacent (A)
We will apply the C A H since we're dealing with cosine:
cos(0)=1/1
cos(0)=1
1 is the answer
B.) But if that's only a symbol...maybe theta or what greek letter:
cos(greek letter that you want)=2/3
(greek letter)=cos^-1 (2/3)
(greek letter)=48.2 degrees..
Maybe this will help....
2007-10-17 03:13:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋
take the inverse of cos 2/3 and you will get the value for theta or alpha or what ever!!!
2007-10-17 02:57:45 · answer #4 · answered by Shahbaz 2 · 0⤊ 0⤋
cos(0) = 1
cos(α) = 2/3
α = 48.2°
2007-10-17 02:50:07 · answer #5 · answered by MamaMia © 7 · 1⤊ 0⤋
i think you meant to write this
cos(ө) = 2/3
cos(2/3)^-1 = 48.2°
ө = 48.2°
2007-10-17 03:06:11 · answer #6 · answered by nack nack 3 · 1⤊ 0⤋
Use a calculator!
2007-10-17 02:47:52 · answer #7 · answered by Anonymous · 0⤊ 0⤋
yea, i think u wrote the question wrong
2007-10-17 02:52:29 · answer #8 · answered by yi 3 · 0⤊ 0⤋