cos^2(20) + cos^2(40) + cos^2(50) + cos^2(70) = ...

Name: cos^2(20) + cos^2(40) + cos^2(50) + cos^2(70) = ...
Uploaded: 2024-05-11T17:36:43
Duration: PT3M43.167S
Description: cos^2(20) + cos^2(40) + cos^2(50) + cos^2(70) = ...