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受欢迎的三角函数 >

(cot(x))(tan(x)-1)=0

解答

(cot (x)) (tan (x) - 1) = 0

解答

x = \frac{π}{4} + πn

+1

度数

x = 4 5^{\circ} + 18 0^{\circ} n

求解步骤

(cot (x)) (tan (x) - 1) = 0

分别求解每个部分

cot (x) = 0 or tan (x) - 1 = 0

cot (x) = 0 : x = \frac{π}{2} + πn

cot (x) = 0

cot (x) = 0

的通解

cot (x)

周期表（周期为

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} cot (x) \mp \infty 31 \frac{3}{3} 0 - \frac{3}{3} - 1 - 3

x = \frac{π}{2} + πn

x = \frac{π}{2} + πn

tan (x) - 1 = 0 : x = \frac{π}{4} + πn

tan (x) - 1 = 0

将

1

到右边

tan (x) - 1 = 0

两边加上

1

tan (x) - 1 + 1 = 0 + 1

化简

tan (x) = 1

tan (x) = 1

tan (x) = 1

的通解

tan (x)

周期表（周期为

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} tan (x) 0 \frac{3}{3} 13 \pm \infty - 3 - 1 - \frac{3}{3}

x = \frac{π}{4} + πn

x = \frac{π}{4} + πn

合并所有解

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

因为方程对以下值无定义:

\frac{π}{2} + πn

x = \frac{π}{4} + πn

作图

流行的例子

10tan(θ)sec(θ)=10cot(θ)csc(θ)

10 tan (θ) sec (θ) = 10 cot (θ) csc (θ)

arctan(x)=((2*1.8))/([(3170+1.7)-1])

arctan (x) = \frac{( 2 \cdot 1.8 )}{[ ( 3170 + 1.7 ) - 1 ]}

cos(4x)+sin(x/2)=0

cos (4 x) + sin (\frac{x}{2}) = 0

2sin^2(θ)-5sin(θ)=3

2 sin^{2} (θ) - 5 sin (θ) = 3

cos(3x-pi/4)= 1/(sqrt(2)),0<= x<= pi

cos (3 x - \frac{π}{4}) = \frac{1}{2}, 0 \leq x \leq π