Q:
# What Is Cos 0 Degrees Equal To?

**The cosine of zero degrees is equal to one.** The cosine is a trigonometric function that can be defined through the Pythagorean Theorem as the length of the side of a right triangle adjacent to an angle over the hypotenuse of the triangle.

The cosine of an angle can be found by calculating the ratio, or by calculating the value using the cosine function on a scientific or graphing calculator. The cosine is related to the trigonometric functions sine and tangent. The cosine function can be used to evaluate angles expressed in either degrees or radians. The inverse of the cosine function is known as arccos.

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Q:
## What Does Cos(2pi) Equal?

A: Cos(2pi) is equal to 1. The cosine function, cos(x), oscillates between 1 and -1 with a period of 2pi as x varies. By definition, cos(0) = 1, and the perio... Full Answer >Filed Under: -
Q:
## What Does 1*tan(2*x) Equal?

A: The function of 1 * tan(2x) is equal to (2 * tan[x])/(1 - tan^2[x]). Because a value multiplied by one is equal to itself, the tangent function with the va... Full Answer >Filed Under: -
Q:
## What Is the Integral of Cos 2x?

A: The integral of cos(2x) is 1/2 x sin(2x) + C, where C is equal to a constant. The integral of the function cos(2x) can be determined by using the integrati... Full Answer >Filed Under: -
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## How Do You Find the Cosine of Pi?

A: The trigonometric functions sine, cosine and tangent calculate the ratio of two sides in a right triangle when given an angle in that triangle. To find the... Full Answer >Filed Under: