The basic trigonometric identities are: Cosec θ = 1/Sin θ Sec θ = 1/Cos θ Cot θ = 1/Tan θ Tan θ = Sin θ/Cos θ Cot θ = Cos θ/Sin θ Sin2θ + Cos2 θ = 1 1 + tan 2 θ = sec 2 θ

它们之间的关系是csc(x) = 1/sin(x)，sec(x) = 1/cos(x)。 这些关系在解决三角函数问题、进行角度转化和简化计算时很有用。 通过例题讲解，我们演示了如何利用已知的sin(x)的值来求 …

(ac) 2 + (bc) 2 = 1. a/c is Opposite / Hypotenuse, which is sin(θ) b/c is Adjacent / Hypotenuse, which is cos(θ) So (a/c) 2 + (b/c) 2 = 1 can also be written:

Secant, cosecant and cotangent, almost always written as sec, cosec and cot are trigonometric functions like sin, cos and tan. sec x = 1 cos x. cosec x = 1 sin x cot x = 1 = cos x tan x sin x. …

sec、csc、cot的三角函数公式是secx=1/(cosx)、cscx=1/(sinx)、cotx=1/(tanx)=(cosx)/(sinx)。 三角函数是基本初等函数之一，是以角度为自变量，角度对应任意角终边与单位圆交点坐标或其 …

In Trigonometry, different types of problems can be solved using trigonometry formulas. These problems may include trigonometric ratios (sin, cos, tan, sec, cosec and cot), Pythagorean …

sin θ = 1/ cosec θ or sin θ x cosec θ = 1 cos θ = 1/ sec θ or cos θ x sec θ = 1; tan θ = 1/cot θ or tan θ x cot θ = 1; Quotient Relations. Again, as the name suggests, quotient relations involve …

2017年5月29日 · The cosecant (), secant and cotangent functions are 'convenience' functions, just the reciprocals of (that is 1 divided by) the sine, cosine and tangent. So So csc ⁡ ( x ) = 1 …

单位圆可以被认为是通过改变邻边和对边的长度并保持斜边等于1查看无限数目的三角形的一种方式。 对于大于2π或小于−2π的角度，简单的继续绕 单位圆 旋转。

2024年12月16日 · Ex 2.1, 3 Find the principal value of cosec−1 (2) Let y = cosec−1 2 cosec y = 2 cosec y = cosec (𝝅/𝟔) ∴ y = 𝝅/𝟔 Since Range of cosec-1 is [−π/2,π/2] – {0} Hence, Principal Value is …