0
The cosine of 2pi is 1. In fact, for every integer N, the cosine of 2 N pi is 1.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Is 2 cosine x the same as cosine squared x?
No
Can you make cosine squared X divided by2 equal to cosine squared x with some constant?
You could just pull out the half: it will be (1/2) cos squared x.
What is the value of x when a triangle has sides of 10 cm by x cm by x-2 cm which is opposite to angle 60 degrees?
If the sides are 10 cm by x cm by x-2 cm opposite to angle 60 degrees then by substituting the given values into the cosine rule a^2 = b^2 +c^2 -(2bc*cosine A) the value of x works out as 16
How do you get a period of 3 in a cosine function?
The argument of the cosine function must be (2pi/3)*x radians
What is the integral of cosine?
∫ cos(x) dx = -sin(x) + C
Is 2 cosine x the same as cosine squared x?
No
Why does cosine x equal cosine negative x?
This is going to require some visualization. Cosine is defined as the x-value on the unit circle. If you picture where a point would be, for example, at the angle of pi/6 (30°) you get a coordinate of (√(3)/2 , 1/2) so cosine is √(3)/2 and sine is 1/2 To find a negative angle you take the reflection across the x-axis. Since this does not chance the x-value, only the y, cosine does not change. The coordinates of -(pi/6) (-30°) are (√(3)/2 , -1/2). cos(-x) = cos(x) sin(-x) = - sin(x)■
How are sine and cosine and secant related?
Sine and cosine are cofunctions, which means that their angles are complementary. Consequently, sin (90° - x) = cos x. Secant is the reciprocal of cosine so that sec x = 1/(cos x). Knowing these properties of trigonometric functions, among others, will really help you in other advance math courses.
Can you make cosine squared X divided by2 equal to cosine squared x with some constant?
You could just pull out the half: it will be (1/2) cos squared x.
How do you write cosine in terms of sine?
cos(x) = sin(pi/2-x) = -sin(x-pi/2)
Sine squared in terms of cosine?
(1 - cos(2x))/2, where x is the variable. And/Or, 1 - cos(x)^2, where x is the variable.
How are ratios for sin and cosine alike?
sin(x) = cos(pi/2 - x). Thus sine is simply a horizontal translation of the cosine function. NB: angles are measured in radians.
What is 3 ten thousands 14 tens 16 ones?
3 x 10 000 = 30 000, 14 x 10 = 140 and 16 x 1 = 1630 000 + 140 + 16 = 30 156
How do you differentiate a cosine function That is what is the derivative of the cosine of x with respect to the independent variable x?
The derivative of cosine of x is simply the negative sine of x. In mathematical terms f'(x) = d/dx[cos(x)] = -sin(x)
What does sine times cosine equal?
Sin(x) cos(x) = 1/2 of sin(2x)
Is x the cosine in math?
No, actually x is the variable in mathematics. cos(x) or cosine is considered a trigonometric function with a variable x.
What is the value of x when a triangle has sides of 10 cm by x cm by x-2 cm which is opposite to angle 60 degrees?
If the sides are 10 cm by x cm by x-2 cm opposite to angle 60 degrees then by substituting the given values into the cosine rule a^2 = b^2 +c^2 -(2bc*cosine A) the value of x works out as 16
