WebApr 14, 2015 · sinA = 12 13 cosA = 5 13 tanA = 12 5 Explanation: The basic trig functions are defined in a right-angled triangle as: sinθ = opposite hypotenuse cosθ = adjacent hypotenuse tanθ = opposite adjacent So, as … Websin α = 1 2 cos α. Squaring both sides gives sin 2 α = 1 4 cos 2 α = 1 4 ( 1 − sin 2 α). Or sin 2 α = 1 5. Similarly one sees that cos 2 α = 4 5. Thus the possibilities are sin α = ± 1 5, cos α = ± 2 5. We still have to show that these possibilities are possible. We know that there is α such that tan α = 1 2.
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WebFor a given angle θ each ratio stays the same no matter how big or small the triangle is When we divide Sine by Cosine we get: sin (θ) cos (θ) = Opposite/Hypotenuse … WebSteps for Finding the Values of Trigonometric Functions and Determining the Quadrant Step 1: Identify the exact value given of a certain trigonometric function. This should narrow down your... strawberry nutella crepe calories
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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. WebNov 18, 2015 · How do you find sin 2θ, given cos θ = 5/13 and θ lies in Quadrant IV? Trigonometry Right Triangles Relating Trigonometric Functions 1 Answer Nghi N. Nov 18, 2015 Find sin 2x, knowing cosx = 5 13 Ans: − 120 169 Explanation: cosx = 5 13. Find sin x. sin2x = 1 − cos2x = 1 − 25 169 = 144 169 --> sinx = ± 12 13. Webcos ( 60) = cos ( 30 + 30) = cos ( 30) cos ( 30) − sin ( 30) sin ( 30) The value of cos ( 30) you know it. The value of sin ( 30) is derived from cos 2 + sin 2 = 1. Again, once you found cos ( 60) you get the value of sin ( 60) for free. Now you can find tan ( 60). Share. strawberry nutrition 1 cup