# 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