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受欢迎的三角函数 >

2sin(x)-sqrt(2)=0,0<= x<= 2pi

解答

2 sin (x) - 2 = 0, 0 \leq x \leq 2 π

解答

x = \frac{π}{4}, x = \frac{3 π}{4}

+1

度数

x = 4 5^{\circ}, x = 13 5^{\circ}

求解步骤

2 sin (x) - 2 = 0, 0 \leq x \leq 2 π

将

2

到右边

2 sin (x) - 2 = 0

两边加上

2

2 sin (x) - 2 + 2 = 0 + 2

化简

2 sin (x) = 2

2 sin (x) = 2

两边除以

2

2 sin (x) = 2

两边除以

2

\frac{2 sin ( x )}{2} = \frac{2}{2}

化简

sin (x) = \frac{2}{2}

sin (x) = \frac{2}{2}

sin (x) = \frac{2}{2}

的通解

sin (x)

周期表（周期为

2 πn

"）：

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

在

0 \leq x \leq 2 π

范围内的解

x = \frac{π}{4}, x = \frac{3 π}{4}

作图

流行的例子

(2sin(x)-1)(sin(x)+1)=0

(2 sin (x) - 1) (sin (x) + 1) = 0

sin (A) = \frac{3}{4}

4sin^2(x)+4sqrt(2)cos(x)-6=0

4 sin^{2} (x) + 42 cos (x) - 6 = 0

4-5cos(x)=4+3sin(x)

4 - 5 cos (x) = 4 + 3 sin (x)

(tan(θ)cos(θ))/(csc(θ))=sin(θ)

\frac{tan ( θ ) cos ( θ )}{csc ( θ )} = sin (θ)