zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的三角函数 >

141.4*sin(45)

解答

141.4 \cdot sin (4 5^{\circ})

解答

\frac{707 2}{10}

+1

十进制

99.98489 \dots

求解步骤

141.4 sin (4 5^{\circ})

= \frac{707}{5} sin (4 5^{\circ})

使用以下普通恒等式:

sin (4 5^{\circ}) = \frac{2}{2}

sin (4 5^{\circ})

sin (x)

周期表（周期为

36 0^{\circ} n

"）：

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= \frac{2}{2}

= \frac{707}{5} \cdot \frac{2}{2}

化简

\frac{707}{5} \cdot \frac{2}{2} : \frac{707 2}{10}

\frac{707}{5} \cdot \frac{2}{2}

分式相乘:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

= \frac{707 2}{5 \cdot 2}

数字相乘:

5 \cdot 2 = 10

= \frac{707 2}{10}

= \frac{707 2}{10}

流行的例子

arctan((226)/(-441))

arctan (\frac{226}{- 441})

250 sin (6 0^{\circ})

303.4*(\frac{cos(4))/(5.85)}{1.37}

303.4 \cdot \frac{\frac{c o s ( 4 ^{\circ} )}{5.85}}{1.37}

cosh (0.5)

arcsin(sin((9pi)/(10)))

arcsin (sin (\frac{9 π}{10}))