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Find cos2θ if sinθ 8/17

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. Web17.(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 ...

Suppose that sinθ=8/17 and θ is in the second quadrant.

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): WebSimplify each expression to a number or one trig function. Show the steps. _____ 1. (sec𝜃)(cos𝜃) _____ 2. (cot𝜃)(sin𝜃) _____ 3. 1+tan2𝜃 _____ 4 ... fox tv richmond https://baileylicensing.com

If cosθ–sinθ=√2sinθ then how do you prove that …

Web5．（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． WebSolve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. WebJul 29, 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(white)(cos theta) = -sqrt(1-64/289) color(white)(cos theta) = -sqrt(225/289) color(white)(cos theta) = -15/17 Then: tan theta = sin theta / cos theta = -8/15 cot theta = cos theta / sin theta ... fox tv ratings last night

Find the Other Trig Values in Quadrant I cos(theta)=2/7 Mathway

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Find cos2θ if sinθ 8/17

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WebMay 18, 2024 · Jackie S. asked • 05/18/17 Use identities to find values of sin 2θ and cos 2θ for sin θ = 2/5, cos θ &lt; 0 WebFree math problem solver answers your trigonometry homework questions with step-by-step explanations.

Find cos2θ if sinθ 8/17

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WebFree Pre-Algebra, Algebra, Trigonometry, Calculus, Geometry, Statistics and Chemistry calculators step-by-step 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

WebCancel the common factor of cos(2θ) cos ( 2 θ). Tap for more steps... tan(2θ) = 1 tan ( 2 θ) = 1. Take the inverse tangent of both sides of the equation to extract θ θ from inside the tangent. 2θ = arctan(1) 2 θ = arctan ( 1) Simplify the right side. Tap for more steps... 2θ = π 4 2 θ = π 4. Divide each term in 2θ = π 4 2 θ = π ... WebNov 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.

WebJan 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; … WebMath 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&amp;A here. See Solution. Want to see the full answer? See Solutionarrow_forward Check out a sample Q&amp;A here. View this solution and millions of others when you join today!

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WebWritten Assignment Unit 1 Roman and greek.docx. University of the People. HIST 1421 fox tv schedule billings mtWebMar 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. black wolf white wolfWebMar 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 ... black wolf website