Food & Cooking
What is the definition of cos?
Top Answer
Wiki User
December 20, 2014 8:42PM
It's a variety of lettuce (Romaine lettuce).
Related Questions
Asked in Math and Arithmetic, Definitions, Algebra, Calculus
What is cos?
Answer One definition of "cos" is a type of lettuce. cos
in math means cosine.
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1 over cos x equals what?
sec(x)=1/cos(x), by definition of secant.
Asked in Math and Arithmetic
What is cos x tan x simlpified?
The definition of tan(x) = sin(x)/cos(x). By this property,
cos(x)tan(x) = sin(x).
Asked in Math and Arithmetic, Algebra, Trigonometry
What trigonometric value is equal to cos 62?
The solution is found by applying the definition of
complementary trig functions:
Cos (&Theta) = sin (90°-&Theta)
cos (62°) = sin (90°-62°)
Therefore the solution is sin 28°.
Asked in Math and Arithmetic, Algebra, Calculus, Trigonometry
What equals 1 - cos squared x divided by cos squared x?
tan^2(x)
Proof:
cos^2(x)+sin^2(x)=1 (Modified Pythagorean theorem)
sin^2(x)=1-cos^2(x) (Property of subtraction)
cos^2(x)-1/cos^2(x)=?
sin^2(x)/cos^2(x)=? (Property of substitution)
sin(x)/cos(x) * sin(x)/cos(x) = tan(x) * tan(x) (Definition of
tanget)
= tan^2(x)
Asked in Math and Arithmetic, Algebra, Calculus
How do you identify sec x sin x equals tan x?
Rewrite sec x as 1/cos x. Then,
sec x sin x = (1/cos x)(sin x) = sin x/cos x. By definition,
this is equal to tan x.
Asked in Math and Arithmetic, Algebra, Calculus
Is cos squared x the same as cos x squared?
No. Cos squared x is not the same as cos x squared.
Cos squared x means cos (x) times cos (x)
Cos x squared means cos (x squared)
Asked in Math and Arithmetic, Algebra, Trigonometry
What is this expression as the cosine of an angle cos30cos55 plus sin30sin55?
cos(30)cos(55)+sin(30)sin(55)=cos(30-55) = cos(-25)=cos(25)
Note: cos(a)=cos(-a) for any angle 'a'.
cos(a)cos(b)+sin(a)sin(b)=cos(a-b) for any 'a' and 'b'.
Asked in Math and Arithmetic, Calculus, Trigonometry
Verify that sin minus cos plus 1 divided by sin plus cos subtract 1 equals sin plus 1 divided by cos?
[sin - cos + 1]/[sin + cos - 1] = [sin + 1]/cosiff [sin - cos +
1]*cos = [sin + 1]*[sin + cos - 1]
iff sin*cos - cos^2 + cos = sin^2 + sin*cos - sin + sin + cos -
1
iff -cos^2 = sin^2 - 1
1 = sin^2 + cos^2, which is true,
Asked in Math and Arithmetic, Algebra
Cos x - cos x sin2 x equals cos3x?
cos(x)-cos(x)sin2(x)=[cos(x)][1-sin2(x)]
cos(x)-cos(x)sin2(x)=[cos(x)][cos2(x)]
cos(x)-cos(x)sin2(x)=cos3(x)
Asked in Math and Arithmetic, Algebra, Trigonometry
What is tan theta in terms of sin theta?
Almost by definition, tan θ = sin θ / cos θ
You can convert this to sine θ in several ways, for
example:
sin θ / cos θ = sin θ / cos (pi/2 - θ)
Or here is another way, using the Pythagorean identity:
sin θ / cos θ = sin θ / root(1 - sin2θ)
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Why you listen to music?
'cos it's makin' me alive, 'cos it's waking me up 'cos it can relax 'cos it gives me energy.... 'cos I like to dance 'cos I like to sing...
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What is cos 495 degree's?
cos(495) = cos(495-360) = cos(135) = -cos(180-135) = -cos(45) =
-sqrt(1/2) or -1/sqrt(2)
Asked in Definitions, Trigonometry
Definition of 6 trigonometric functions?
sin(x) = x - x3/3! + x5/5! - x7/7! + ...
and
cos(x) = 1 - x2/2! + x4/4! - x6/6! + ... where x is the angle
measured in radians.
Then
tan(x) = sin(x)/cos(x) where cos(x) is not 0
cosec(x) = 1/sin(x) where sin(x) is not 0
sec(x) = 1/cos(x) where cos(x) is not 0
and
cot(x) = cos(x)/sin(x) where sin(x) is not 0
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What is cos of a negative angle?
The cosine function is an even function which means that cos(-x)
= cos(x).
So, if cos of an angle is positive, then the cos of the negative
of that angle is positive and if cos of an angle is negative, then
the cos of the negative of that angle is negaitive.
Asked in Algebra, Calculus, Trigonometry
What is Cos 2 x divided by cos x?
cos 2x = cos2 x - sin2 x
= 2 cos2 x - 1; whence,
cos 2x / cos x = 2 cos x - (1 / cos x)
= 2 cos x - sec x.
Asked in Math and Arithmetic
What is cos 295?
Cos 295 fall s in the 4th quadrant where cosine is positive
cos 295 = cos (360-295) = cos 65 = 0.4226
Asked in Trigonometry
How do you prove this trigonometric relationship sin3A equals 3sinA cos 2 A - sin 3 A?
sin(3A) = sin(2A + A) = sin(2A)*cos(A) + cos(2A)*sin(A)=
sin(A+A)*cos(A) + cos(A+A)*sin(A)
= 2*sin(A)*cos(A)*cos(A) + {cos^2(A) - sin^2(A)}*sin(A)
= 2*sin(A)*cos^2(A) + sin(a)*cos^2(A) - sin^3(A)
= 3*sin(A)*cos^2(A) - sin^3(A)
Asked in Math and Arithmetic, Algebra, Trigonometry
How do you simplify cos theta times csc theta divided by tan theta?
'csc' = 1/sin
'tan' = sin/cos
So it must follow that
(cos) (csc) / (tan) = (cos) (1/sin)/(sin/cos) = (cos) (1/sin)
(cos/sin) = (cos/sin)2
Asked in Math and Arithmetic, Algebra, Calculus
What is sec x cos x?
sec x = 1/cos x
sec x cos x = [1/cos x] [cos x] = 1
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Express cos -155 as a function of a positive acute angle?
Cos(-155) = cos(155) = 1 - cos(180-155) = 1-cos(25).
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Why was the wooden spoon invented?
cos they were durbrain cos they were durbrain cos they were
durbrain
Asked in Math and Arithmetic, Algebra
How would you prove left cosA plus sinA right times left cos2A plus sin2A right equals cosA plus sin3A?
You need to make use of the formulae for sin(A+B) and cos(A+B),
and that cos is an even function:
sin(A+B) = cos A sin B + sin A cos B
cos(A+B) = cos A cos B - sin A sin B
cos even fn → cos(-x) = cos(x)
To prove: (cos A + sin A)(cos 2A + sin 2A) = cos A + sin 3A
The steps are to work with the left hand side, expand the
brackets, collect [useful] terms together, apply A+B formula above
(backwards) and apply even nature of cos function:
(cos A + sin A)(cos 2A + sin 2A) = cos A cos 2A + cos A sin 2A +
sin A cos 2A + sin A sin 2A
= (cos A cos 2A + sin A sin 2A) + (cos A sin 2A + sin A cos
2A)
= cos(A - 2A) + sin(A + 2A)
= cos(-A) + sin 3A
= cos A + sin 3A
which is the right hand side as required.
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Express all the trigonometric ratios of cosA?
sin = sqrt(1 - cos^2)tan = sqrt(1 - cos^2)/cos
sec = 1/cos
cosec = 1/sqrt(1 - cos^2)
cot = cos/sqrt(1 - cos^2)