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受欢迎的三角函数 >

2sec(x)-2=0

解答

2 sec (x) - 2 = 0

解答

x = 2 πn

+1

度数

x = 0^{\circ} + 36 0^{\circ} n

求解步骤

2 sec (x) - 2 = 0

将

2

到右边

2 sec (x) - 2 = 0

两边加上

2

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

化简

2 sec (x) = 2

2 sec (x) = 2

两边除以

2

2 sec (x) = 2

两边除以

2

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

化简

sec (x) = 1

sec (x) = 1

sec (x) = 1

的通解

sec (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} sec (x) 1 \frac{2 3}{3} 22 Undefined - 2 - 2 - \frac{2 3}{3} 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} sec (x) - 1 - \frac{2 3}{3} - 2 - 2 Undefined 22 \frac{2 3}{3}

x = 0 + 2 πn

x = 0 + 2 πn

解

x = 0 + 2 πn : x = 2 πn

x = 0 + 2 πn

0 + 2 πn = 2 πn

x = 2 πn

x = 2 πn

作图

流行的例子

(tan(x))(sin^2(x)-a)(sec(x)-a)=0

(tan (x)) (sin^{2} (x) - a) (sec (x) - a) = 0

3cos(x)+2sin(x)=sqrt(3)

3 cos (x) + 2 sin (x) = 3

sin(x)-1=sqrt(3)cos(x)

sin (x) - 1 = 3 cos (x)

cos(3x)=-cos(x)

cos (3 x) = - cos (x)

sqrt(3)sin(x)-((sqrt(3)sin(x))-1)=1n

3 sin (x) - ((3 sin (x)) - 1) = 1 n