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  2. Degree (angle) - Wikipedia

    en.wikipedia.org/wiki/Degree_(angle)

    A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle in which one full rotation is 360 degrees. [4] It is not an SI unit—the SI unit of angular measure is the radian—but it is mentioned in the SI brochure as an accepted unit. [5]

  3. Cephalometric analysis - Wikipedia

    en.wikipedia.org/wiki/Cephalometric_analysis

    sella–nasion–A point angle: SNA or S-N-A: Average of 82 degrees with +/- of 2 degrees sella–nasion–B point angle: SNB or S-N-B: Average of 80 degrees with +/- of 2 degrees sublabialis: Sl: subnasale (synonyms, subnasal or subnasion) Sn: In the midline, the junction where base of the columella of the nose meets the upper lip stomion ...

  4. Angle - Wikipedia

    en.wikipedia.org/wiki/Angle

    One could say, "The Moon's diameter subtends an angle of half a degree." The small-angle formula can convert such an angular measurement into a distance/size ratio. Other astronomical approximations include: 0.5° is the approximate diameter of the Sun and of the Moon as viewed from Earth. 1° is the approximate width of the little finger at ...

  5. Exact trigonometric values - Wikipedia

    en.wikipedia.org/wiki/Exact_trigonometric_values

    The values of sine and cosine of 30 and 60 degrees are derived by analysis of the equilateral triangle. In an equilateral triangle, the 3 angles are equal and sum to 180°, therefore each corner angle is 60°. Bisecting one corner, the special right triangle with angles 30-60-90 is obtained.

  6. Thread angle - Wikipedia

    en.wikipedia.org/wiki/Thread_angle

    In mechanical engineering, the thread angle of a screw is the included angle between the thread flanks, measured in a plane containing the thread axis. [1] This is a defining factor for the shape of a screw thread .

  7. Angle of view (photography) - Wikipedia

    en.wikipedia.org/wiki/Angle_of_view_(photography)

    So, a standard 50 mm lens for 35 mm photography acts like a 50 mm standard "film" lens on a professional digital SLR, but would act closer to an 80 mm lens (1.6×50mm) on many mid-market DSLRs, and the 40-degree angle of view of a standard 50 mm lens on a film camera is equivalent to an 80 mm lens on many digital SLRs.

  8. Special right triangle - Wikipedia

    en.wikipedia.org/wiki/Special_right_triangle

    The 30°–60°–90° triangle is the only right triangle whose angles are in an arithmetic progression. The proof of this fact is simple and follows on from the fact that if α, α + δ, α + 2δ are the angles in the progression then the sum of the angles 3α + 3δ = 180°. After dividing by 3, the angle α + δ must be 60°. The right angle ...

  9. Millennium Force - Wikipedia

    en.wikipedia.org/wiki/Millennium_Force

    The train then drops 300 feet (91 m) at an 80-degree angle and reaches a maximum speed of 93 mph (150 km/h) at the bottom of the hill. This is followed by a climb of 169 feet (52 m) through a right overbanked turn at 122 degrees from the horizontal axis, of which the train then travels through a tunnel as it passes over the Frontier Trail.