Buktikan bahwa: cos 2 a(1+cos a)=cos a+cos 2 a+cos 3 a

Name: Buktikan bahwa: cos 2 a(1+cos a)=cos a+cos 2 a+cos 3 a
Uploaded: 2024-01-21T00:12:00
Duration: PT2M43.353S
Description: Buktikan bahwa: cos 2 a(1+cos a)=cos a+cos 2 a+cos 3 a