Sin 120° + cos 210° + tan 225° + cos (-45°)
Matematika
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Pertanyaan
Sin 120° + cos 210° + tan 225° + cos (-45°)
1 Jawaban
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1. Jawaban Anonyme
jawab
sin 120 + cos 120 + tan 225 + cos (-45) =
= 1/2 √3 - 1/2 + 1 + 1/2 √2
= 1/2 √3 + 1/2 + 1/2√2
= 1/2 (√3 + 1 + √2)