Sin 45°-cos 315°+tan 240°:sin 120°+cos 330°
Matematika
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Pertanyaan
Sin 45°-cos 315°+tan 240°:sin 120°+cos 330°
1 Jawaban
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1. Jawaban sigitbudikurnip4v1jp
Sin 45°-cos 315°+tan 240°:sin 120°+cos 330°
= sin 45 - (-cos 45) + (-tan 30).(sin 60) + cos 30
= (√2)/2 + (√2)/2 - ((√3)/3).((√3)/2) + (√3)/2
= (√2) - 1/2 +(√3)/2
= (2√2 - 2 + √3)/2