The t = tan θ 2 substitution
John J. Bird · 2021
Why it is important to understand: The t = t a n θ 2 s u b s t i t u t i o n https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003124221/0900dd79-d8d1-4206-96a9-b4f3dd0cc859/content/math41_3.tif"/>