选择恰当的单词,并用其适当的形式填空。 sin3▱=cos( 1. Are you your homework now? 2. I'm a picture. 3. My father is a book. 4. Grandma's birthday is . 5. He is Chinese. 相关知识点: 试题来源: 解析 1.doing;2.drawing;3.reading;4.com
I_1=4AMgRsinα(1)()1.Amy,Lucy,DickadChuckaregOodfhends(2)()2.Dickisfat,becausehelikeSeaingchickenandwatchingTV.(3)()3.AmylikeSplayingping-pongandbadminton(4)()4.Lucy11kessingsingandcosθ(5)()5.AmyarctandLucyarcsine⋅1hesinθ ...
Find sin A. Find the exact trigonometric function value \sin 2385^{\circ} (a) \frac{-\sqrt{2{2} (b) 2\sqrt{3} (c) \frac{-\sqrt{3{2} (d) \frac{-1}{2} Solve the following problem: For 0 = \sin c^{-1}(\frac{a...
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...
The Wagers of Sin.Are All Tom,COs; Grape Expectations withMax CrusIMPORTANT disclaimer: Tom BolaCOs appearance today is unbiased commentary and unpaid, except via a convoluted series of companies owned by Fast Eddie.Daily Examiner (Grafton, Australia)...
【解析】 [分析],反三角函数是一个角(或弧)对应的实数,故可先设arcsinx= A.则$$ \sin A = x a r c \cos t g A = B $$,可得$$ \cos B = t g A $$,再求sinB.按此从里向外逐段简化即可。 [解] 设$$ a r e g i n x = A $$,则$$ \sin A = x $$,且$$ A \in ...
用方框中短语的恰当形式完成句子.(2sinαcosα)/(α+2sinα+cosα+2cosα)= (1).They are . They are very happy.(2).It's rude to others in the USA.(3).It's getting late. It's time to .(4).Our new English teacher, Mr White, school today.(5).The hat under the table a ca...
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 re...
The correct Answer is:D To solve the problem, we need to find the value of α such that the functions sin(αx)+cos(αx) and |cosx|+|sinx| have the same fundamental period. 1. Determine the Period of sin(αx)+cos(αx): - The period of sinx and cosx is 2π. - For sin(α...
Trigonometric Ratios | Definition, Similar Triangles & Examples from Chapter 14 / Lesson 7 59K Explore trigonometric ratios? Learn how to do the trigonometric ratios sin, cos and tan. Understand the concept of similar tr...