4.1

ElsaLaLainee Farmer*Katie Dondlinger

*Trigonometry for farmers: swine and coswine...

Introduction (..?)

Degree: Measurement equal to 1/180th of a straight line

Minute: 1/60th of a degree– symbol is ‘

Second: 1/60th of a minute (or 1/3600th of a degree)– symbol is “

To convert radians to degrees, multiply by

To convert degrees to radians, multiply by

Arc length formula (radian measure):

Arc length formula (degree measure):

Introduction

Converting to Degrees and DMS

Instruction and Example

Convert Radians and DegreesInstruction and Example

Instruction—Find Arc Length

Example- Find Arc Length

We’re done!