Find cos2θ if sinθ 13/85
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. 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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WebSep 16, 2016 · 2 Answers. Sorted by: 2. By the double angle formulas , r = cos ( 2 θ) = cos 2 θ − sin 2 θ = x 2 r 2 − y 2 r 2 = x 2 − y 2 r 2. This leads, because r 2 = x 2 + y 2, to. x 2 − y 2 = r 3 = ( x 2 + y 2) 3 / 2. You should then be able to square, multiple terms out and find the equation in implicit form. Wolfram Alpha gives several ... WebPrecalculus. Find the Other Trig Values in Quadrant IV sin (theta)=-12/13. sin(θ) = − 12 13 sin ( θ) = - 12 13. 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.
WebAug 3, 2024 · θ can be in the first quadrant 0 ≤ θ ≤ 90 or the fourth quadrant 270 ≤ θ ≤ … Web(1 point) Find cos 2θ if sin θ = cos2θ二 12 37 This problem has been solved! You'll get a …
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 […] WebJul 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 ...
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.
WebApr 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! creative amazing makeupWebNov 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, creative and brave botanyWebOct 1, 2024 · Answer: First notice that θ is in quadrant I, where the sine and tangent will … creative and brand ltdWebNov 18, 2015 · Explanation: cosx = 5 13. Find sin x. sin2x = 1 − cos2x = 1 − 25 169 = … doc grand finaleWebQuestion: Find cos 2 theta if sin theta = 13/85. cos 2 theta = Show transcribed image … doc graphicsWebFree math problem solver answers your algebra, geometry, trigonometry, calculus, and … doc.google.com spreadsheetWebMay 18, 2024 · Use identities to find values of sin 2θ and cos 2θ for cos θ = -12/13, sin θ … creative and artistic skills