Angle

2 artículos

Alidade Angle of arrival Angle of incidence Angle of list Angle of view Angular aperture Angular diameter Angular displacement Angular frequency Angular mean Angular micrometer Angular resolution Angular wavenumber Anti rolling gyro Approach and departure angles Arcfourth Archipendulum Arcminute Arcsecond Arcthird Argument of periapsis Astrolabe Axis angle representation Azimuth Beam angle Beam compass Bevel Binary angular measurement Binary degree Binary radians Brewsters angle Bulls eye level Circumferentor Clock position Cone aperture Conformal rotation vector Contact angle Control moment gyroscope Crosss theorem Cun Curvilinear angle Davenport chained rotations Declination Dioptra Elevation Euler angles Fibre optic gyroscope Foucaults gyroscope Fourth Gimbal Gimbal lock Gon Goniometer Grad Gradian Graphometer Gyroscope Gyrotheodolite Hour angle Hyperbolic angle Hyperbolic orthogonality Inclinometer Jacobs staff Lear inc v adkins Liquid capacitive inclinometer Longitude of the ascending node Magnetic declination Magnetic deviation Mariners astrolabe Milliradian Minute Minute and second of arc Mixed angle Mural instrument Octant Parallactic angle Partes minutae primae Partes minutae secundae Perceived visual angle Phase angle Plumb bob Points of the compass Polar distance Position angle Prism dioptre Quadrant Quantum gyroscope Radian per second Rake Rate gyro Rate integrating gyroscope Reaction wheel Reed level Reflecting instrument Retriangulation of great britain Right angle Right ascension Ring laser gyroscope Scale of chords Second Sextant Sine and cosine Sinus perfectus Sinus totus Sliding t bevel Solid angle Spat Sperry gyroscope Spirit level Square degree Square fourth Square minute Square second of arc Square third Steradian Subtended angle Target angle Tau Theodolite Third Tiltmeter Topographic abney level True anomaly Turn Unit angle Unit plane angle Unit solid angle Vibrating structure gyroscope Visual angle Water level Weinberg angle Yaw rate sensor Zh ng

Geometry BachilleratoExplicación9 min

Sixteen and Four Elevenths Minutes Past Three

The long hand turns 6 degrees a minute and the short one half a degree, so a 90 degree gap closes at 5.5 degrees a minute and the hands coincide 180/11 minutes past three, at 3:16:21.8181. At 3:15 the long hand has reached the 3 and the short hand is 7.5 degrees ahead of it, which is the whole content of the wrong answer. Consecutive coincidences are 720/11 minutes apart, so there are eleven per twelve hours and twenty-two per day, and the common phrasing "eleven times a day" is wrong by a factor of two.

Geometry SecundariaExplicación8 min

Seven and a Half Degrees at a Quarter Past Three

At 3:15 the minute hand is on the 3 and the angle between the hands looks like zero. It is 7.5 degrees, or pi/24 radians, because the hour hand crawls a quarter of the way from the 3 to the 4 while the minute hand travels a full lap. The zero answer is exact for a clock whose hour hand waits on each numeral and jumps, which is not a clock that exists.