sin^ 35 ° + sin^ 55°
Matematika
Stephen131
Pertanyaan
sin^ 35 ° + sin^ 55°
1 Jawaban
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1. Jawaban GayuhTR
sin35+sin55=2sin{(35+55)/2}sin{(35-55)/2}=2sin45sin10=2*(√2/2)*sin10=√2sin10