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受欢迎的三角函数 >

(sec^2(+1))(sec^2(-1))=tan(x)

解答

(sec^{2} (+ 1)) (sec^{2} (- 1)) = tan (x)

解答

x = 1.48578 \dots + πn

+1

度数

x = 85.12895 \dots^{\circ} + 18 0^{\circ} n

求解步骤

(sec^{2} (1)) (sec^{2} (- 1)) = tan (x)

sec (- 1) = sec (1)

sec (- 1)

利用以下特性:

sec (- x) = sec (x)

sec (- 1) = sec (1)

= sec (1)

sec^{2} (1) sec^{2} (1) = tan (x)

交换两边

tan (x) = sec^{2} (1) sec^{2} (1)

化简

sec^{2} (1) sec^{2} (1) : sec^{4} (1)

sec^{2} (1) sec^{2} (1)

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

sec^{2} (1) sec^{2} (1) = sec^{2 + 2} (1)

= sec^{2 + 2} (1)

数字相加:

2 + 2 = 4

= sec^{4} (1)

使用反三角函数性质

tan (x) = sec^{4} (1)

tan (x) = sec^{4} (1)

的通解

tan (x) = a \Rightarrow x = arctan (a) + πn

x = arctan (sec^{4} (1)) + πn

x = arctan (sec^{4} (1)) + πn

以小数形式表示解

x = 1.48578 \dots + πn

作图

流行的例子

2cos^2(x)-8cos(x)=2sin^2(x)-5

2 cos^{2} (x) - 8 cos (x) = 2 sin^{2} (x) - 5

2cos^2(a)tan(a)=tan(a)

2 cos^{2} (a) tan (a) = tan (a)

sin^2(x)+5sin(x)+5=0

sin^{2} (x) + 5 sin (x) + 5 = 0

cos (x) = - 0.814

3cos^2(x)-8cos(x)+4=sin^2(x)

3 cos^{2} (x) - 8 cos (x) + 4 = sin^{2} (x)