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受欢迎的三角函数 >

2=2sec(x)

解答

2 = 2 sec (x)

解答

x = 2 πn

+1

度数

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

求解步骤

2 = 2 sec (x)

交换两边

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

cos(x)-sin(x)=(sqrt(2))/2

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

2/5 cos(x)=(sqrt(2))/5

\frac{2}{5} cos (x) = \frac{2}{5}

sin^2(x)=6(cos(-x)+1)

sin^{2} (x) = 6 (cos (- x) + 1)

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

3 sin^{2} (x) = sin (x) + 2

sin(θ)=-7/25 ,cos(θ/2),270<θ<360

sin (θ) = - \frac{7}{25}, cos (\frac{θ}{2}), 27 0^{\circ} < θ < 36 0^{\circ}