Matematika Sekolah Menengah Atas habisin poincos 195° + cos 105° = ​

lazaroschowalterulv – May 11, 2023

habisin poin

cos 195° + cos 105° = ​

Jawaban:

cos 195° + cos 105° =2 cos (cos 195° + cos 105°) /cos 2 )(195° - 105°) /2

=2cos 150° cos 45°

=2cos (-1/2 √3) (1/2 √2)

= - (1/2) √6

semoga membantu

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