answersLogoWhite

0


Best Answer

In a right triangle, the cosine of an angle is defined as the ratio of the adjacent side of that angle to the hypotenuse.

User Avatar

Wiki User

โˆ™ 2011-08-12 14:42:48
This answer is:
User Avatar
Study guides

Algebra

20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

โžก๏ธ
See all cards
3.79
โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…
1462 Reviews

Add your answer:

Earn +20 pts
Q: How is cosine defined?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

When is secant not defined?

The secant of an angle is the reciprocal of the cosine of the angle. So the secant is not defined whenever the cosine is zero That is, whenever the angle is a multiple of 180 degrees (or pi radians).


Is tangent sine divided by cosine?

Yes, except at odd multiples of pi/2 radians, where the cosine is zero so that the division is not defined.


Why you only use cosine for scalar product?

That is how the scalar product is defined. Also, the projection of one vector onto another at an angle to it is directly proportional to the cosine of that angle.


What is cosine cubed?

It is cosine*cosine*cosine.


What is the definition of a tangent function?

Tangent (theta) is defined as sine (theta) divided by cosine (theta). In a right triangle, it is also defined as opposite (Y) divided by adjacent (X).


How is tan equal to undefined?

Tan of pi/2 + k*pi radians, for integer k, is not defined since tan = sin/cos and the cosine of these angles is 0. Since divsiion by 0 is not defined, the tan ratio is not defined.


What is the cosine of 3.14?

what is the cosine of 3.14 ?


How is tangent defined?

The tangent of an angle theta is defined as sine(theta) divided by cosine(theta). Since the sine and cosine are Y and X on the unit circle, then tangent(theta) is Y divided by X. The tangent of a function at a point is the line going through that point which has slope equal to the first deriviative of the function at that point.


What is cosine of 1?

Cosine of 1 degree is about 0.999848. Cosine of 1 radian is about 0.540302.


What is the range of the cosine function?

The cosine function, like all of the trigonometric functions, is periodic about the rotation around a circle. Since the cosine is defined as the adjacent/hypotenuse of a right triangle, you can clearly see that its value can never be greater than one or less than -1 since the hypotenuse is always longer than the adjacent side. It turns out that, indeed, the cosine's range is from -1 to 1, written [-1,1].


What is an inverse cosine?

The inverse of the cosine is the secant.


Reciprocal of a cosine?

Reciprocal of Cosine is Secant

People also asked