Find cos2θ if sinθ 8/17
Web【题目】已知向量 a=(-1/2,(√3)/2) ， b=(2cosθ, 2snθ）， 0θπ .1）若 a∥b ，求角θ的大小;2）若 a+b= b ，求sinθ的值. 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 ...
Find cos2θ if sinθ 8/17
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Web詳細な解法を提供する Microsoft の無料の数学ソルバーを使用して、数学の問題を解きましょう。この数学ソルバーは、基本的な数学、前代数、代数、三角法、微積分などに対応します。 WebMay 18, 2024 · Use identities to find values of sin 2θ and cos 2θ for cos θ = -12/13, sin θ > 0 Answers · 1 Use the trigonometric identities to find sin x, tan x, and cot(-x), given cos x = 3/5 and x in quadrant IV
WebSimplify each expression to a number or one trig function. Show the steps. _____ 1. (sec𝜃)(cos𝜃) _____ 2. (cot𝜃)(sin𝜃) _____ 3. 1+tan2𝜃 _____ 4 ... 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 ...
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): 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．
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 ...
WebScribd is the world's largest social reading and publishing site. tghtuWebNov 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. tgh twitterWebApr 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. tghtygWebJul 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 ... tghttgWebFind cos2θ if sinθ=178. cos2θ= Question: Find cos2θ if sinθ=178. cos2θ= Show transcribed image text. Expert Answer. Who are the experts? Experts are tested by Chegg as specialists in their subject area. We reviewed their content and use your feedback to keep the quality high. ... Find cos 2 θ if sin θ = 17 8 ... symbole du thalliumWebMar 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 ... tgh tuition reimbursementWebExpert Answer. In Exercises 1-20, solve the given trigonometric equation exactly over the indicated inte 1. cosθ = − 22,0 ≤ θ < 2π 2. sinθ = − 22,0 ≤ θ < 2π 3. cscθ = −2,0 ≤ θ < 4π 4. secθ = −2,0 ≤ θ < 4π 5. tanθ = 0, all real numbers 6. cotθ = 0, all real numbers 7. sin(2θ) = −21,0 ≤ θ < 2π 8. cos(2θ) = 23 ... symbole dwg electricite