1+tan^(2)theta) का मान होगा : 01:59 बिन्दु (3,0) का X-निर्देशांक होगा : 01:55 यदि गोले का व्यास 14 से. मी. है, तो उसकी...
1 + tan^2 theta = ? 00:27 When we see at a higher level, from the horizontal line, angle formed ... 01:10 If sin theta=11/61, ffind the value of cos theta using trigonometric i... 02:08 If tan theta=2, find the values of other trigonometric ratios. 02:35 If sec theta=13...
z=r(\cos\theta+{\rm i}\sin\theta)\\ 这一表示称为复数的三角表示,如图所示:其中r=\sqrt{a^2+b^2}, \theta=\left\{\begin{array}{ll}\arctan \frac{b}{a}, & z \text { 在第一象限, } \\\arctan \frac{b}{a}+\pi, & z \text { 在第二、第三象限, } \\\arctan \frac{b...
不难发现: cotθ=tan(π2−θ) 导函数: f(x)=cotx,f′(x)=(cosxsinx)′=−sin2x−cos2xsin2x=−1sin2x 余割 定义: 单位圆中cscθ=1sinθ=ry(单位圆中) 图像: 正割 定义: \sec\theta = \frac{1}{\cos\theta} = \frac{r}{x} 图像: 容易发现: ...
∵tan\theta =2=\frac{sin\theta }{cos\theta } ∴sin\theta =2cos\theta tan^2\theta =\frac{1-cos^2\theta }{cos^2\theta }=\frac{1}{cos^2\theta }-1=4 ∴cos^2\theta =\frac{1}{tan^2\theta +1}=\frac{1}{5} ∴1+sin\theta cos\theta =1+2cos^2\theta =1+\frac{2}...
考点7 二倍角的正弦、余弦、正切公式例7(1)已知$$ \tan \theta = 2 $$,则tan2θ的值是 ( ) A.$$ \frac { 4 } { 3 } $$ B.$$ \frac { 4 } { 5 } $$ C.-$$ \frac { 2 } { 3 } $$ D.-$$ \frac { 4 } { 3 } $$(2)化简$$ \frac { \cos ^ { 2 } 5 ^ ...
除了升级并推出一系列运动器械、户外装备外,Keep近期还参投了瑜伽裤品牌“tan theta”。在tan theta背后,是Keep的前高管创业成立。资料显示,tan theta成立于2024年1月份,由Keep前课程内容副总裁蛋挞、课程产品总监马东雯、服装产品经理和内容产品经理等联合创立,已于4月初推出首批瑜伽裤产品,定价在350元左右,...
Answer Step by step video, text & image solution for हल कीजिए : sec ^(2) 2theta =1 -tan 2theta by Maths experts to help you in doubts & scoring excellent marks in Class 11 exams.Updated on:21/07/2023 Class 11MATHSTRIGONOMETRIC FUNCTIONS ...
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A. 2 B. \frac{1}{2} C. -\frac{1}{2} D. -2 相关知识点: 试题来源: 解析 A ∵\tan\theta =2, ∴\tan(\theta +\pi) =\frac{\tan \theta +\tan \pi}{1-\tan \theta \tan \pi} =\frac{\tan \theta }{1} =2, 故本题的正确答案为A。