Nilaikan
-\frac{\sqrt{2}}{2}\approx -0.707106781
Kongsi
Disalin ke papan klip
\sin(\frac{3\pi }{2}+\frac{\pi }{4})=\sin(\frac{3\pi }{2})\cos(\frac{\pi }{4})+\sin(\frac{\pi }{4})\cos(\frac{3\pi }{2})
Gunakan \sin(x+y)=\sin(x)\cos(y)+\sin(y)\cos(x) dimana x=\frac{3\pi }{2} dan y=\frac{\pi }{4} untuk mendapatkan hasil.
-\cos(\frac{\pi }{4})+\sin(\frac{\pi }{4})\cos(\frac{3\pi }{2})
Dapatkan nilai \sin(\frac{3\pi }{2}) daripada nilai trigonometric.
-\frac{\sqrt{2}}{2}+\sin(\frac{\pi }{4})\cos(\frac{3\pi }{2})
Dapatkan nilai \cos(\frac{\pi }{4}) daripada nilai trigonometric.
-\frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}\cos(\frac{3\pi }{2})
Dapatkan nilai \sin(\frac{\pi }{4}) daripada nilai trigonometric.
-\frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}\times 0
Dapatkan nilai \cos(\frac{3\pi }{2}) daripada nilai trigonometric.
-\frac{\sqrt{2}}{2}
Lakukan pengiraan.
Contoh
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometri
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Persamaan linear
y = 3x + 4
Aritmetik
699 * 533
Matriks
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Persamaan serentak
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Pembezaan
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Pengamiran
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Had
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