Greenwood press
Download 1.81 Mb. Pdf ko'rish
|
book-20600
CARTESIAN COORDINATES
11 The position of Chicago on the earth according to its latitude and longitudinal positions, which are the same as the cen- tral angles from the center of the earth. (34,118) to approximately (0.5934,2.0595). Using this formula, the distance be- tween Chicago and Los Angeles is d = 3963 arccos[sin(0.7156) sin(0.5934)+ cos(0.7156) cos(0.5934) cos(2.0595 − 1.5184)], which is approximately 1,758 miles. online sources for further exploration Celestial coordinates Creating an image map Georeferencing and digital images The satellite times Spherical coordinates and the GPS Stereograms ▲ ▼ ▲ CIRCLES Circles are used in many real-world applications. All manholes are round so that their covers never slip through the pipes from the ground to the sewers. Any way you turn the cover it is impossible to force it through the hole, since the dis- tance from the center of the circle is always the same. Since polygons do not hold this property, a circle is very useful for this purpose. Circular wheels allow the opportunity for constant and smooth motion when riding a bicycle or automobile. If the circle had edges or vertices the ride would become very bumpy, because the distance from the center of the wheel to its perimeter would no longer be constant. In addition, a car will travel the distance its wheels rotate, because the friction between the wheel and pavement cause the car to move. For every revolution the tires make, the car will travel the length of Download 1.81 Mb. Do'stlaringiz bilan baham: |
Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
ma'muriyatiga murojaat qiling
ma'muriyatiga murojaat qiling