# Scientific Functoids

## Overview

**Scientific** functoids are used to perform a variety of standard trigonometric, logarithmic, and exponential calculations.

With the exception of the **Base-Specified Logarithm** and **X^Y** functoids, which each take two input parameters, the **Scientific** functoids all take a single parameter.

The four trigonometric **Scientific** functoids (**Arc Tangent**, **Cosine**, **Sine**, and **Tangent**) all use radians rather than degrees as the units for their relevant input or output parameters. A radian is a unit of measure of angles, such that there are 2π radians in a circle. It follows that:

2π radians equals 360 degrees

1 radian = 180/π degrees

1 degree = π/180 radians

If your input or output instance messages use degrees as their unit of measure for angles, you will need to use a

**Mathematical**functoid in conjunction with a trigonometric**Scientific**functoid to achieve the correct result.

## Available functoids

The **Scientific** functoids are:

- 10^n
- Arc Tangent
- Base-Specified Logarithm
- Common Logarithm
- Cosine
- Natural Exponential Function
- Natural Logarithm
- Sine
- Tangent
- X^Y

## See Also

- How to Add Basic Functoids to a Map
**Scientific Functoids Reference**in the UI guidance and developers API namespace reference