apakah (sin A) ² + (cos A) ²=1
Matematika
kemah
Pertanyaan
apakah (sin A) ² + (cos A) ²=1
1 Jawaban
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1. Jawaban bangilham
iya benar,
(sin A) ² + (cos A) ² = 1
(sin 45) ² + (cos 45) ² = 1
0,5 + 0,5 = 1
(sin A) ² + (cos A) ² = 1
(sin 30) ² + (cos 30) ² = 1
0,25 + 0,75 = 1
terbukti jika dimasukkan sudut2 istimewa