Find cos2θ if sinθ 13/85
WebAug 3, 2024 · θ can be in the first quadrant 0 ≤ θ ≤ 90 or the fourth quadrant 270 ≤ θ ≤ … WebAnswer: The Values of sin2θ and cos2θ, when cosθ=12/13 is Sin2θ =120/169 and Cos2θ = 119/169. Let us see the detailed solution, Explanation: Given that, Cosθ=12/13. Using the trignometric ratio for Cosθ, [ Cosθ = Adjacent/Hypotenuse ] ==> Adjacent/Hypotenuse = 12/13 . Applying Pythagoras theorem, we can find the opposite side.
Find cos2θ if sinθ 13/85
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Web(1 point) Find cos 2θ if sin θ = cos2θ二 12 37 This problem has been solved! You'll get a … WebQuestion: Given that sinθ=−8513 and cosθ<0, determine the values of the sine and cosine functions for 2θ. sin2θ= (Type an integer or a simplified fraction.) cos2θ= (Type an integer or a simplified fraction.) Show transcribed image text. ... Given that sin θ = − 85 13 ...
WebFind 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. 1st step. All steps. Final answer. WebUse 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. Step 2. Find the opposite side of the unit circle triangle. Since the adjacent side and hypotenuse are known, use the Pythagorean theorem to find the remaining side.
WebDec 9, 2024 · Trigonometric Identities (1) Conditional trigonometrical identities We have certain trigonometric identities. Like sin2 θ + cos2 θ = 1 and 1 + tan2 θ = sec2 θ etc. Such identities are identities in the sense that they hold for all value of the angles which satisfy the given condition among them and they are called […] WebSolve your math problems using our free math solver with step-by-step solutions. Our …
WebAnswer: The Values of sin2θ and cos2θ, when cosθ=12/13 is Sin2θ =120/169 and Cos2θ …
WebNov 20, 2015 · XXX the ratio of opposite side hypotenuse = 5 13. By Pythagorean Theorem. If opposite side = 5 units and hypotenuse = 13 units. XXX (for any units) then adjacent side = 12 units. and. cos = adjacent side hypotenuse = 12 13. However, we need to note that if the angle is in Quadrant II then the adjacent side will actually be a negative value, computer bild downloads pdf kostenlosWebOct 1, 2024 · Answer: First notice that θ is in quadrant I, where the sine and tangent will … computerbild downloads thunderbirdWebFeb 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 ... ech saint herblainWebMay 18, 2024 · sinθ=2/5. cos 2 θ=1-sin 2 θ gives cos 2 θ=1-4/25=21/25. cosθ<0 gives cosθ=-(√21)/5 ... sin 2θ = 2 sinθcosθ and cos 2θ = cos 2 θ-sin 2 ... 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 ... echs annual validationWebJul 28, 2024 · sinθ = 5/13 [Given] ∴ cosecθ = 1/sinθ = 1÷ (5/13) ∴ cosec θ = 13/5. We know that, sin2θ + cos2θ = 1. ∴ (5/13)2 + cos2θ = 1. ∴ 25/169 + cos2θ = 1. ∴ cos2θ= 1 – 25/169. ∴ cos2θ = (169 – 25 )/169. ∴ cos2θ= 144/169. ∴ cosθ = ±√ (144/169) ∴ cosθ = ±12/13. But, θ is an acute angle [Given] ∴ All trigonometric ... computerbild downloads kostenlose officeWebSolve 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. computerbild downloads adobe readerWebApr 9, 2024 · We know that. cos(2θ) = 1 − 2sin2θ, so. 3 5 = 1 −2sin2θ. 3 5 −1 = − 2sin2θ. 2 5 = 2sin2θ. 1 5 = sin2θ. sinθ = ± 1 √5. Depending on the quadrant of θ. Hopefully this helps! computer bild downloads windows 10 iso