Simple harmonic motion (SHM( is defined by the second order differential equation:
d2y/dt2 = -ky
where y is a fubction of time, t and is the displacement (relative to the central position), and k is a positive constant.
The equation says is that at any given position of the object undergoing SHM, its acceleration is proportional to its displacement from, and directed towards the central position.
The sine and cosine functions are solutions to the differential equation.
Sinusoid shape of the sine and cosine functions appear as oscillations. If an object is moving in a straight line and its position (function of time) can be described as sinusoid then it is referred to as a simple harmonic motion.
Sine, Cosine, Tangent, Cotangent, secant and cosecant
The basic circular functions are sine, cosine and tangent. Then there are their reciprocals and inverses.
sine, cosine, tangent, cosecant, secant and cotangent.
Sine and cosine are cofunctions, which means that their angles are complementary. Consequently, sin (90° - x) = cos x. Secant is the reciprocal of cosine so that sec x = 1/(cos x). Knowing these properties of trigonometric functions, among others, will really help you in other advance math courses.
Sinusoid shape of the sine and cosine functions appear as oscillations. If an object is moving in a straight line and its position (function of time) can be described as sinusoid then it is referred to as a simple harmonic motion.
Many oscillations are simple harmonic motions and such motion can be represented by a sine (or equivalently, cosine) curve.
Sine and cosine functions are used in physics to describe periodic phenomena, such as simple harmonic motion, sound waves, and alternating currents in circuits. They help in modeling phenomena that exhibit oscillatory behavior over time or space. Sine and cosine functions are also used in vector analysis to analyze the components of vectors in different directions.
because sine & cosine functions are periodic.
The maximum of the sine and cosine functions is +1, and the minimum is -1.
The oscillation of a dot in classical mechanics typically refers to the harmonic motion of an object about a fixed point. This motion can be described using sinusoidal functions such as sine and cosine. The dot's position changes periodically as it moves back and forth around the equilibrium position.
The principal Trigonometric function is Sine(Sin). It has a complementary function Cosine (Cos). Bases on these two functions, are further trig. functions. they are. Tangent(Tan) = Sin /Cos Cosecant(CSC) = 1/Sin Secant (SEC) = 1/Cos Cotangent(COT) = Cos/Sin The word 'Sine' comes from Latin , and means 'curve'. Initially you learn it between 0 - 90 degrees. It is a continuous 'wave', from infinity to infinity. . The Sin/Cos functions only range from -1 to 1 through '0'. The Tan function ranges from negative infinity to positive infinity, through '0'. For a triangle inscribed in a circle. At the circles centre, the radius may be '1' unit. If the radius is angles at 30 degrees from the horizontal(x) axis, then the vertical (opposite) lines perpendicular height of the triangle is exactly '1/2' ( 0.5), compared to the radius. Hence the Sin( 30 degrees) is opposite / radius(hypotenuse) = (1/2)/1 = 1/2 All the othesr trig. functional answer are based on moving the radius from horizontal to vertical. with in the described circle. This is why it produces , such 'horrible' decimal figures. Have a look in Castle's Four Figures Tables, rather than using a pocket calculator, and also graphs of the Sine/Cosine and Tangent curves.
Sine, Cosine, Tangent, Cotangent, secant and cosecant
They are different trigonometric functions!
Simple harmonic motion - such as the motion of a simple pendulum, electromagnetic and other waves, tidal heights - may be modelled as sine (or cosine) curves. In these cases, the periodicity of the function is measured in units of time.
Since amplitude can vary, it is inconvenient to set "0" at the maximum swing point. This can move your zero and all successive measurements with just a touch. Additionally, "simple harmonic motion" is easily described by combinations of the sine and cosine functions, and they yield positive and negative values of equal magnitudes. So it is *easier* to set zero at "mid span".
The basic functions of trigonometry are: sine cosine tangent secant cosecant cotangent