百度试题 结果1 结果2 题目15.这事你有把握吗?Aresinαcosα+ 相关知识点: 试题来源: 解析 答案见上 结果一 题目 4.这件事你有把握吗?Areyou sureaboutit? 答案 答案见上相关推荐 14.这件事你有把握吗?Areyou sureaboutit?反馈 收藏
The sine of one of the angles of a right triangle (often abbreviated “sin”) is the ratio of the length of the side of the triangle opposite the angle to the length of the triangle’s hypotenuse. The cosine (often abbreviated “cos”) is the ratio of the length of the side adjacent...
sine opp/hyp sin(θ) cosine adj/hyp cos(θ) tangent opp/adj tan(θ) name ratio notation cosecant hyp/opp csc(θ) secant hyp/adj sec(θ) cotangent adj/opp cot(θ) The ratios sine, cosine, and tangent are the "regular" trig ratios; the cosecant, secant, and cotangent are their ...
To solve the problem, we need to analyze the given information that sinθ and cosθ are the roots of the quadratic equation ax2−bx+c=0. Step 1: Use the properties of rootsFor a quadratic equation of the form ax2+bx+c=0, the sum of the roots r1+r2 is given by −ba and th...
the bird in the oak the bird that can sin the birdcage the birds in the same the biro of wounds the birth of swing the bishop in waiting the black door the black eyed pea the black mesa the black night the black wall the blacksmith instit the blade of an oar the blind have a keen...
【题目】5.Some stars look(very small) but in fact they aremuch bigger than the sun. 答案 【解析】【答案】tiny【核心短语/词汇】in fact事实上【翻译】一些星星看起来非常小但是实际上他们比太阳要大的多。【解析】考查词汇,根据提示very small非常小,可用tiny极小的,来替代,故答案为tiny.相关推荐 1【...
用else或 other填空。1. Is there anyonejiningus? 2. -What are thesinαcsinαcosα-They are cleaning the classroom.3.-Wheredo you want to go tomorrow?-I want to go to the Great Wall. 相关知识点: 试题来源: 解析 1. else 2. other 3. else ...
()9.Thsmysinacmcosecmcoses.A.is;isB.are;areC.is;areD.are;is 相关知识点: 试题来源: 解析 答案:C核心短语/词汇this:这个these:这些parents:父母亲句子译文:这是我的妹妹,这些是我的父母亲。解析:根据主谓的一致性,主语是指示代词this时,be动词用is,主语是指示代词this的复数形式these时,be动词用are,...
If sinα,sinβ and cosα are in GP, then roots of x2+2xcotβ+1=0 are always A equal B real C imeginary D greater than 1 Video Solution Play Video Text SolutionVerified by Experts The correct Answer is:B 2| ShareSave Answer Step by step video & image solution for If sin alpha,...
百度试题 结果1 题目There arecosαcosα=sinαcosαA.notB.noC. any 相关知识点: 试题来源: 解析 B 反馈 收藏