Cos(2 kuadrat) 45° + 2 cos 60° + sin 45° = ...
Matematika
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Pertanyaan
Cos(2 kuadrat) 45° + 2 cos 60° + sin 45° = ...
1 Jawaban
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1. Jawaban Anonyme
jawab
cos² 45 + 2 cos 60 + sin 45=
(1/2 √2)² + 2 (1/2) + 1/2 √2 =
= 1/2 + 1+ 1/2√2
= 3/2 + 1/2 √2
= 1/2 ( 3 + √2)