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July 11, 2016

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sine, cosine and tangent graphs - remember the key points: 0, 90, 180, 270, 360 (click to enlarge). Find the amplitude . This table shows the meaning of each possible result: but don't stop trying! It's not an easy topic at first. I WANNA SAY THANKS A lot TO THE CREATER OT THIS PAGE . Find the point at . catalystsnstars from Land of Nod on March 23, 2010: You remind me of my brother, thanks for the short tutor session. 6. You're confusing your sine and cosine graphs, would it help to sketch them a few times? The sine and cosine graphs. Working with trigonometric relationships in degrees. A sine wave produced naturally by a bouncing spring: The Sine Function has this beautiful up-down curve (which repeats every 2π radians, or 360°). Both of these graphs repeat every 360 degrees, and the cosine graph is essentially a transformation of the sin graph - it's been translated along the x-axis by 90 degrees. I'm having some trouble in my Algebra 2/Trig H class. Can you see this in the graphs above. Tan x must be 0 (0 / 1), At x = 270 degrees, sin x = 1 and cos x = 0. I am doing a precal project and i am trying to find a job in the aviation realm besides the pilot that uses this concept. thanks. The Sine Function has this beautiful up-down curve (which repeats every 2π radians, or 360°).It starts at 0, heads up to 1 by π/2 radians (90°) and then heads down to −1. As the angle approaches 90 degrees, our opposite side would approach inifinity. For each question, choose the best answer for you. This equation is a roundabout way of explaining why … Tan x has an asymptote (1 / 0), At x = 180 degrees, sin x = 0 and cos x = 1. In the illustration below, cos(α) = b/c and cos(β) = a/c. You can use the slider, select the number and change it, or "play" the animation. The Inverse Sine, Cosine and Tangent graphs are: Here is Cosine and Inverse Cosine plotted on the same graph: They are mirror images (about the diagonal)! Thumbs up on going through with it. Multiply by . At x = 0 degrees, sin x = 0 and cos x = 1. Trig graphs are easy once you get the hang of them. Cosine is just like Sine, but it starts at 1 and heads down until π radians (180°) and then heads up again. This graph repeats every 180 degrees, rather than every 360 (or should that be as well as every 360?). ... Make the expression negative because cosine is negative in the second quadrant. 4. c = 0. In fact Sine and Cosine are like good friends: they follow each other, exactly π/2 radians (90°) apart. At π/2 radians (90°), and at −π/2 (−90°), 3π/2 (270°), etc, the function is officially undefined, because it could be positive Infinity or negative Infinity. to make sure you get your asymptotes and x-intercepts in the right places when graphing the tangent function. IT REALLY HELPED ME OUT WITH MY HOMEWORK. Mr Homer (author) from Yorkshire, England on January 18, 2011: Natalie- I know that basic light/sound waves follow a sin-type curve, and there are also plenty of applications to do with circular motion... but as for jobs for your project, I can't really think of anything. The main problems A-Level students have, in my experience, are: y = sin x and y = cos x look pretty similar; in fact the main difference is that the sine graph starts at (0,0) and the cosine at (0,1). For example, cosθ = sin (90° – θ) means that if θ is equal to 25 degrees, then cos 25° = sin (90° – 25°) = sin 65°. Mr Homer (author) from Yorkshire, England on March 24, 2010: Thanks, I think! At some point this hub should link to other trigonometry topics, so keep coming back. Your final result is the possibility with the greatest number of points at the end. Tan x must be 0 (0 / 1), At x = 90 degrees, sin x = 1 and cos x = 0. It is the complement to the sine. i was thinking a tool and die maker, but i cannot find any concrete examples of them using this concept...any ideas? Both of these graphs repeat every 360 degrees, and the cosine graph is essentially a transformation of the sin graph - it's been translated along the x-axis by 90 degrees. For each answer you selected, add up the indicated number of points for each of the possible results. Sorry! This will be helpful for those wanting to learn trigonometry. Graph sine functions by adjusting the a, k and c and d values. Tan x has an asymptote (1 / 0). The cosine of a 90-degree angle is equal to zero, since in order to calculate it we would … The cos trigonometric function calculates the cosine of an angle in radians, degrees or gradians. but don't worry! Top tip for the exam:  To check you've drawn the right one, simply use your calculator to find sin 0 (which is 0) or cos 0 (which is 1) to make sure you're starting in the right place!

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