Answer to: Find the exact value of cos \left ( \dfrac{4\pi}{3} \right ). By signing up, you'll get thousands of step-by-step solutions to your...
(5)\(\sin \left(-\dfrac{4 \pi }{3}\right)\); (6)\(\tan556^{ \circ }\). 相关知识点: 试题来源: 解析 (1)正; (2)负; (3)零; (4)负; (5)正; (6)正. 说明 认识不同位置的角对应的三角函数值的符号.反馈 收藏 ...
百度试题 结果1 题目函数\(y=cos\left (\dfrac{x}{2}-\dfrac{\pi}{3} \right ) \)的周期是___.相关知识点: 试题来源: 解析 \(4\pi\) 反馈 收藏
To explain why {eq}\cos\left(\dfrac{4\pi}{3}\right) {/eq} is negative, we will make use of the unit circle. That is, any point that lies on the unit...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can ...
A、(dfrac{1}{2}) B、(2) C、(-dfrac{1}{2}) D、(-2) 免费查看参考答案及解析 题目: 已知(M)为曲线 (C) (begin{cases} & x=3+cos theta , & y=sin theta end{cases}) (() (theta ) 为参数())上的动点(.)设 (O) 为原点,则(left| ,OM, right|) 的最大值是 A、(1) B、...
Answer to: What is y\left(\dfrac{\pi}{2}\right) \text{ if }y' = 4 \cos t \text{ and } y(0) = 0? By signing up, you'll get thousands of...
已知点\(P\left( \sin \dfrac{3 \pi }{4}, \cos \dfrac{3 \pi }{4}\right)\)落在角\( \theta \)的终边上,且\( \theta \in [0,2 \pi )\),则\( \theta \)的值为( ) A:\(\dfrac{ \pi }{4}\) B:\(\dfrac{3 \pi }{4}\) C:\(\dfrac{5 \pi }{4}\) D:...
f(x)在\left[ k \pi -\dfrac{ \pi }{12},k \pi +\dfrac{5 \pi }{12} \right]上单增,在\left[ k \pi +\dfrac{5 \pi }{12},k \pi +\dfrac{11 \pi }{12} \right]上单减,k\in \mathbf{Z}.(2)\dfrac{\sqrt{3}}{4}. (1)f(x)=\sin 2x-\sqrt{3}(1+\cos 2x)...
Fill in the blanks: The sin of ___ and ___ is - \dfrac{\sqrt{3{2}. Evaluate:\int sin ^6(x)dx Prove that the given statement is incorrect: \int_{-1}^{1} x^{-2}\,dx = \left[\dfrac{-1}x\right]_{-1}^{1}...
$y = \dfrac{1}{5}\cos(2x)+2$ $y = \dfrac{1}{2}\cos(5x)+2$ 4. A sine graph transformation has the form $y=a\sin(bx+c)+d$. What is a cosine function with a graph that shares the same points? $y=a\cos\left(bx-c+\dfrac{3\pi}{2}\right)$ $y=a\cos\left(bx+c...