• Thumbnail for Small-angle approximation
    small angles, the trigonometric functions sine, cosine, and tangent can be calculated with reasonable accuracy by the following simple approximations:...
    16 KB (2,139 words) - 23:42, 6 July 2025
  • Thumbnail for Pendulum (mechanics)
    centre-of-mass θ {\displaystyle \theta } is the angle from the vertical Hence, under the small-angle approximation, sin ⁡ θ ≈ θ {\displaystyle \sin \theta \approx...
    43 KB (7,667 words) - 21:45, 19 June 2025
  • Thumbnail for Paraxial approximation
    In geometric optics, the paraxial approximation is a small-angle approximation used in Gaussian optics and ray tracing of light through an optical system...
    4 KB (353 words) - 18:33, 13 April 2025
  • opposed to spurious digits Small-angle approximation – Simplification of the basic trigonometric functions Successive-approximation ADC – Type of analog-to-digital...
    14 KB (1,577 words) - 21:42, 31 May 2025
  • Thumbnail for Simple harmonic motion
    displacement (and even so, it is only a good approximation when the angle of the swing is small; see small-angle approximation). Simple harmonic motion can also...
    15 KB (2,237 words) - 01:46, 27 June 2025
  • Thumbnail for 1 in 60 rule
    separation purposes. The rule is based on the small-angle approximation (which states that, for small angles, sin θ ≈ θ, where θ is in radians), along with...
    5 KB (782 words) - 00:23, 5 March 2023
  • Thumbnail for String vibration
    {\partial ^{2}y}{\partial t^{2}}}.} According to the small-angle approximation, the tangents of the angles at the ends of the string piece are equal to the...
    9 KB (1,461 words) - 13:13, 25 July 2025
  • triangles can be greatly simplified by using the approximation that the sine of a small angle is equal to that angle in radians. The solution is particularly...
    13 KB (1,289 words) - 06:17, 24 March 2025
  • involves hyperbolic sinusoids, and note that unlike the small angle approximation, this approximation is unstable, meaning that | θ | {\displaystyle |\theta...
    21 KB (2,645 words) - 14:07, 7 August 2025
  • Consider a planar pendulum with constant natural frequency ω in the small angle approximation. There are two forces acting on the pendulum bob: the restoring...
    30 KB (4,016 words) - 06:21, 21 April 2025
  • Thumbnail for Milliradian
    Milliradian (redirect from Mil (angle))
    Milliradians are generally used for very small angles, which allows for very accurate mathematical approximations to more easily calculate with direct proportions...
    41 KB (5,022 words) - 04:01, 8 July 2025
  • Small-angle scattering (SAS) is a scattering technique based on deflection of collimated radiation away from the straight trajectory after it interacts...
    13 KB (1,897 words) - 03:05, 18 June 2025
  • Thumbnail for Rapidity
    artanh(v/c) where c is the speed of light. For low speeds, by the small-angle approximation, w is approximately v / c. Since in relativity any velocity v...
    14 KB (2,057 words) - 01:55, 6 February 2025
  • Thumbnail for Visual acuity
    {S^{2}}{4}}}},} where the S2/4 term is omitted for small objects relative to great distances by small-angle approximation. To exceed the SAVT, an object of size S...
    62 KB (7,723 words) - 10:37, 5 August 2025
  • Thumbnail for Field of view
    linear field of view in millimeters per meter. Then, using the small-angle approximation: A ≈ 360 ∘ 2 π ⋅ M 1000 ≈ 0.0573 × M {\displaystyle A\approx {360^{\circ...
    12 KB (1,547 words) - 13:47, 3 August 2025
  • sin(d𝜃) = ⁠1/2⁠ · r2 · d𝜃). Note that sin(d𝜃) ≈ d𝜃 due to small angle approximation. Through summing the areas of the triangles, the expression for...
    37 KB (5,897 words) - 15:21, 1 June 2025
  • Thumbnail for Airfoil
    w(x)} must balance an inverse flow from V. By the small-angle approximation, V is inclined at angle α-dy⁄dx relative to the blade at position x, and the...
    29 KB (3,897 words) - 10:32, 28 July 2025
  • Thumbnail for Spherical law of cosines
    c^{2}\approx a^{2}+b^{2}-2ab\cos C\,.} To prove this, we will use the small-angle approximation obtained from the Maclaurin series for the cosine and sine functions:...
    13 KB (2,181 words) - 13:44, 22 April 2025
  • Thumbnail for Trigonometry
    trigonometric identities Rational trigonometry Skinny triangle Small-angle approximation Trigonometric functions Unit circle Uses of trigonometry Harper...
    50 KB (4,947 words) - 12:23, 19 July 2025
  • Thumbnail for Wavelength
    small difference. Consequently, interference occurs. In the Fraunhofer diffraction pattern sufficiently far from a single slit, within a small-angle approximation...
    36 KB (4,299 words) - 20:17, 15 May 2025
  • Thumbnail for Optics
    Geometric optics is often simplified by making the paraxial approximation, or "small angle approximation". The mathematical behaviour then becomes linear, allowing...
    109 KB (13,060 words) - 22:56, 3 August 2025
  • Angular distance (category Angle)
    we can develop the above expression and simplify it. In the small-angle approximation, at second order, the above expression becomes: cos ⁡ θ ≈ 1 −...
    6 KB (1,178 words) - 15:00, 25 March 2025
  • Thumbnail for Contrast transfer function
    shown to be proportional to the cube of the incident angle (θ) under the small-angle approximation, and that the explicit form in this case is r s = C...
    19 KB (2,946 words) - 04:11, 20 July 2025
  • Thumbnail for Trigonometric functions
    complementary angle) and proceeds to define the cotangens similarly. Bhāskara I's sine approximation formula Small-angle approximation Differentiation...
    77 KB (10,653 words) - 00:44, 29 July 2025
  • {\displaystyle \theta } is nearly equal to θ {\displaystyle \theta } (see small-angle approximation), and so this expression simplifies to the equation for a simple...
    127 KB (16,060 words) - 03:15, 29 July 2025
  • Thumbnail for Biological small-angle scattering
    Biological small-angle scattering is a small-angle scattering method for structure analysis of biological materials. Small-angle scattering is used to...
    28 KB (3,450 words) - 15:19, 6 March 2025
  • Thumbnail for Linear approximation
    paraxial approximation, in which only rays which make small angles with the optical axis of the system are considered. In this approximation, trigonometric...
    10 KB (1,263 words) - 11:33, 7 August 2025
  • \phi } direction. Using some elementary trigonometry and the small angle approximation, we find that the force vectors differ by a vector tangent to...
    7 KB (1,330 words) - 03:49, 5 March 2025
  • Thumbnail for Phase detector
    using some approximations. Assume that the phase differences will be small (much less than 1 radian, for example). The small-angle approximation for the...
    13 KB (1,759 words) - 22:13, 6 March 2025
  • across a wing may still have varying α(y)). By the small-angle approximation, the effective angle of attack at y of the combined freestream and vortex...
    14 KB (1,732 words) - 23:55, 25 May 2025