Find cos2θ if sinθ 8/17

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August undefined, 2024

Web2024年辽宁铁道职业技术学院高职单招语文／数学／英语考试题库历年高频考点版答案详解.docx,2024年辽宁铁道职业技术学院高职单招语文／数学／英语考试题库历年高频考点版答案详解 (图片可自由调整大小) 题型语文数学英语总分得分第I卷一.数学题库(共30题) 1.设向量a=（32，sinθ），b=（cosθ ... WebMar 31, 2024 · sinx = 4/5, x is in quadrant I or II. cosx =3/5 or -3/5, cosx = + or - sqr (1-sin^2x) = sqr (1-16/25) = sqr (9/25 = 3/5. use one of the double angle formula for cosines. cos2x = cos^2 - sin^2= 9/25 -16/25 = - 7/25. it's negative because 2x is in quadrant II or III where cosines are negative. or use cos2x = 1-2sin^2x = 1 - 2 (4/5)^2 = 1-2 (16/25 ...

Use identities to find values of sin 2θ and cos 2θ for sin ... - Wyzant

WebCos 2θ sinθ r2 cosθ. 1 r. Cos 2θ sinθ sin 2θ cosθ 1 r. The polar curves r 1 sin2θ and r sin2θ 1 have the same graph 6. The equations r 2, x2 y2 4, and rt 2 sin3t, 2 cos3t 0 t. Rsin theta rsinθ, rsin 2 theta, rsin2x, rsin2θ, rsin 3 theta rsin3θ, rsin 4 theta rsin4θ, rsin 5 theta rsin5θ. Example: Find the points on the curve r 3 cos ... WebMar 21, 2024 · Try this option (replace, pls, a↔θ): rule: if a∈ [0;90°], then cos (a)>0, sin (a)>0, sin (a/2)>0, cos (a/2)>0 and tg (a)>0. 1. for sin (a/2): using 'cos (a)=1-2sin² (a/2)', ⇒. 2. for sin (2a): sin (2a)=2*sin (a)cos (a), where sin (a)=√ (1-cos² (a))=15/17. how many hours has it been since tuesday

Answered: Find cos2θ if sinθ=7/25 bartleby

WebQuestion 1158677: Find the exact values of sin 2θ, cos 2θ, and tan 2θ for the given value of θ. cos θ = 3/5; 0° θ 90° a).sin 2θ b).cos 2θ c).tan 2θ Please help! I want to know how to solve these kind of problems so please don't just show me the answer. Thank you :) Answer by josmiceli(19441) (Show Source): Webtanθ+sinθ =cscθ 8) ... sin2θ+cos2θ cosθsinθ =2sinθ−1 ... cos 265°cos55° + sin265°sin55° 17) sin305 cos25 + cos305 sin25 Compare formulas—cos difference Compare formulas—sin sum cos x cos y + sin x sin y sin x cos y + cos x sin y cos 265°cos55° + sin265°sin55° sin305 cos25 + cos305 sin25 ... how a moen shower valve works

Solved Find cos2θ if sinθ=178. cos2θ= Chegg.com

If Sinθ = 8/17, Where θ is an Acute Angle, Find the Value …

WebNov 12, 2024 · Find sin(2θ), cos(2θ), and tan(2θ) exactly. lysys lysys 11/12/2024 Mathematics College answered Suppose that sinθ=8/17 and θ is in the second quadrant. Find sin(2θ), cos(2θ), and tan(2θ) exactly. See answer Advertisement Advertisement tjclutterbuckozbvco tjclutterbuckozbvco WebNov 12, 2024 · sin (2 Θ) = 2cosΘsinΘ. sinΘ=opposite/hypotenuse=8/17. adjacent = (17^2 - 8^2)^1/2 =15. sin (2 Θ) = 2cosΘsinΘ = 2 * (15/17)* (8/17)= 240/289. opposite of 2Θ equals 240. hypotenuse of 2Θ equals 289. adjacent of 2Θ = (289^2 - 240^2)^1/2 = 161. cos (2Θ) = 161/289. tan (2Θ) = 240/161. how a molotov cocktail worksWebNov 14, 2014 · sinθ = 8/17 in QII means that cosθ = -15/17 sin2θ = 2sinθcosθ = 2(8/17)(-15/17) cos2θ = cos^2θ - sin^2θ = (15/16)^2 - (8/17)^2 tan2θ is of course, sin2θ/cos2θ. answered by Steve. November 14, 2014. NNNNNNNNNNNNNNNOOOOOOOOOOOOOO. answered by Anonymous. January 10, 2024. Answer this Question. Your Name. how many hours has ninja played fortnite

"WebFeb 11, 2024 · sin (2θ) = 2 sinθ cosθ. cos (2θ) = cos 2 θ - sin 2 θ. So now we need to know cosθ and sinθ. Draw a triangle, and use the fact that tanθ = (opposite side) / (adjacent side). So the triangle this angle describes has height 7 and length 24. You can then find the hypotenuse and calculate the sin and cos, plug them into the above formulas ... " - Find cos2θ if sinθ 8/17

Find cos2θ if sinθ 8/17

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WebApr 15, 2024 · Given that sinθ=8/17 , what is cosθ ? Enter your answer, as a simplified fraction, in the boxes. See answer Advertisement Advertisement bhuvna789456 bhuvna789456 Cosθ = 15/17. Step-by-step explanation: Sinθ = 8/17. We know that, Sin^2 θ + cos^2 θ =1. 64/289 + cos^2 θ =1. WebScribd is the world's largest social reading and publishing site.

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WebJul 30, 2024 · Given that #sin theta = 8/17# and #cos theta < 0#, we have:. #cos theta = -sqrt(1-sin^2 theta)# #color(white)(cos theta) = -sqrt(1-(color(blue)(8/17))^2)# #color ... WebIf cosθ–sinθ=√2sinθ then how do you prove that cosθ+sinθ=√2cosθ? Solution: Method 1: Given that: cos θ – sin θ=√2 sin θ, square both sides to get. cos^2 θ - 2 cos θ sin θ + sin ^2 θ = 2 sin^2 θ …. (1) RHS = √2cos 22.5 = 1.306562965. Correct. Hence, cos θ …

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WebSimplify each expression to a number or one trig function. Show the steps. _____ 1. (sec𝜃)(cos𝜃) _____ 2. (cot𝜃)(sin𝜃) _____ 3. 1+tan2𝜃 _____ 4 ... WebPrecalculus. Find the Other Trig Values in Quadrant I cos (theta)=2/7. cos (θ) = 2 7 cos ( θ) = 2 7. Use the definition of cosine to find the known sides of the unit circle right triangle. The quadrant determines the sign on each of the values. cos(θ) = adjacent hypotenuse cos ( θ) = adjacent hypotenuse. Find the opposite side of the unit ...

WebTrigonometry. Find the Other Trig Values in Quadrant I sin (theta)=8/17. sin(θ) = 8 17 sin ( θ) = 8 17. Use the definition of sine to find the known sides of the unit circle right triangle. The quadrant determines the sign on each of the values. sin(θ) = opposite hypotenuse sin ( θ) = opposite hypotenuse. Find the adjacent side of the unit ...

WebFind Trig Functions Using Identities sin (theta)=15/17 , cos (theta)=8/17. sin(θ) = 15 17 sin ( θ) = 15 17 , cos (θ) = 8 17 cos ( θ) = 8 17. To find the value of tan(θ) tan ( θ), use the fact that tan(θ) = sin(θ) cos(θ) tan ( θ) = sin ( θ) cos ( θ) then substitute in the known values. tan(θ) = sin(θ) cos(θ) = 15 17 8 17 tan ( θ ... how many hours have i been alive calculatorWeb17.(本题满分10分)已知第三象限角θ的终边落在直线y=2x上,(1)求sin θ,cosθ,tanθ的值.(2)若f(x)= rac(cos( rac(11π(x-a)(sin( racπ2-axcos(x+a)sin(1+x)cosx)(sin( rac(1x-aπ-a)x-a)si先化简式子并求当 α=θ ... =-2√2. ∴tanθ=√2 2(9k)tanθ=-(√2)/2 nθ =-(舍去),则 sin^2θ-sin^2θ-sinθ-sinθ-sinθ-sin^2θ-sinθ ... how among us triggers youWebWelcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get … how a molly bolt worksWebMath Calculus Find cos2θ if sinθ=7/25. Find cos2θ if sinθ=7/25. Question. Find cos2θ if sinθ=7/25. Expert Solution. Want to see the full answer? Check out a sample Q&A here. See Solution. Want to see the full answer? See Solutionarrow_forward Check out a sample Q&A here. View this solution and millions of others when you join today! how many hours have i been awakeWebIf Sinθ = 8/17, Where θ is an Acute Angle, Find the Value of Cos θ by Using Identities. Maharashtra State Board SSC (English Medium) 10th Standard Board ... Question Bank Solutions 11838. Concept Notes & Videos 384. Time Tables 25. Syllabus. If Sinθ = 8/17, Where θ is an Acute Angle, Find the Value of Cos θ by Using Identities. - Geometry. how a monitor is related to computer graphicsWebJan 7, 2024 · theta=pi/2,(7pi)/6, (11pi)/6 cos2θ + sinθ = 0 cos(2theta)=1-2sin^2theta :. cos2θ + sinθ=1-2sin^2theta+sintheta=0 (rearranging to look more like a quadratic) -2sin^2theta+sintheta+1=0 color(red)(-1)(-2sin^2theta+sintheta+1)=color(red)(-1)xx0 2sin^2theta-sintheta-1=0 Let x=sintheta 2x^2-x-1=0 Factorising the quadratic yields; … how a moms like a palm treeWeb5．（3分）已知sinθ=2cosθ，则tan2θ的值为． 6．（3分）已知角α的终边位于函数y=﹣3x的图象上，则cos2α的值为． 7．（3分）函数的值域用区间表示为． 8．（3分）在 ABC中，已知a=7，b=8，c=13，则角C的大小为． 9．（3分）在 ABC中，已知A=45°，B=105°，则的值为． how a momentary switch works