Nilaikan
\frac{\sqrt{2}}{2}\approx 0.707106781
Kongsi
Disalin ke papan klip
\sin(90+45)=\sin(90)\cos(45)+\sin(45)\cos(90)
Gunakan \sin(x+y)=\sin(x)\cos(y)+\sin(y)\cos(x) dimana x=90 dan y=45 untuk mendapatkan hasil.
1\cos(45)+\sin(45)\cos(90)
Dapatkan nilai \sin(90) daripada nilai trigonometric.
1\times \frac{\sqrt{2}}{2}+\sin(45)\cos(90)
Dapatkan nilai \cos(45) daripada nilai trigonometric.
1\times \frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}\cos(90)
Dapatkan nilai \sin(45) daripada nilai trigonometric.
1\times \frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}\times 0
Dapatkan nilai \cos(90) daripada nilai trigonometric.
\frac{\sqrt{2}}{2}
Lakukan pengiraan.
Contoh
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Trigonometri
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Persamaan linear
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Aritmetik
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Matriks
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Persamaan serentak
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Pembezaan
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Pengamiran
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Had
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