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减去 2π 2 π 的全角，直至角度大于等于 0 0 且小于 2π 2 π。 sin(0) sin (0) 的准确值为 0 0。 免费的数学问题解答者采用逐步解题讲解方式回答您的代数、几何、三角集合学、微积分以及统计学家庭作业问题，就像一位数学辅导老师那样为您提供帮助。

Subtract full rotations of 2π 2 π until the angle is greater than or equal to 0 0 and less than 2π 2 π. The exact value of sin(0) sin (0) is 0 0. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

What is Sin of 2pi? The value of sin of 2pi is 0. i.e., sin 2 π = 0. From trigonometric table, we know the trigonometric ratios of standard angles 0, π/6, π/4, π/3, and π/2. So this table doesn't give us the value of sin of 2pi.

sin(π－α)=sinα. cos(π－α)=－cosα. tan(π－α)=－tanα. cot(π－α)=－cotα. 公式五:利用公式一和公式三可以得到2π-α与α的三角函数值之间的关系. sin(2π－α)=－sinα. cos(2π－α)=cosα. tan(2π－α)=－tanα. cot(2π－α)=－cotα. 公式六:π/2±α与α的三角函数值之间的关系. sin(π/2+α ...

2009年11月11日 · 在平面坐标系画一个以原点为圆心，1为半径的圆，圆上任何点的横坐标就是函数y=sinx的值。 你可以想象一个动点在圆上运动，转动2π就是一圈就又回到初始点，所以周期是2π.

\sin(2\pi q) is algebraic over \mathbb{Q} [duplicate] https://math.stackexchange.com/questions/2739560/sin2-pi-q-is-algebraic-over-mathbbq If q=\frac mn, with m,n\in\mathbb Z and n>0, thene^{2\pi iq}=e^{2\pi i\frac mn},which is …

prove\:\tan^2(x)-\sin^2(x)=\tan^2(x)\sin^2(x) \frac{d}{dx}(\frac{3x+9}{2-x}) (\sin^2(\theta))' \sin(120) \lim _{x\to 0}(x\ln (x)) \int e^x\cos (x)dx \int_{0}^{\pi}\sin(x)dx

2017年2月26日 · If you have been looking for what is sin 2pi, or if you have been wondering about sin 2pi radians in degrees, then you are right here, too. In this post you can find the sin 2pi value, along with identities.

2020年4月4日 · Well, the answer to "why" is because sine takes an angle of the unit circle as its input, and there are 2pi radians in a circle. At x=0 y is 0 and starts to increase. This doesn't happen again until x=2pi. So the period is 2pi. Sine is defined by the y value on the unit circle.