 | John Duncan - 1926 - 744 стор.
...yirr3. Cone or pyramid ; volume = area of base x \ perpendicular height. TRIGONOMETRY. A degree is the angle subtended at the centre of a circle by an arc of ^Lyth of the circumference. FIG. 5. — Area of a paiabola. A radian is the angle subtended at the... | |
 | W. G. Borchardt, A. D. Perrott - 1928 - 492 стор.
...Radian. 2^ Thus l Badián = — of a right angle, 7Г /. 7г radians = 2 right angles = 180°. DEF. The angle subtended at the centre of a circle by an arc equal in length to the radius is called a Radian. DEF. The Circular Measure of an angle is the number of... | |
 | A. J. Sadler, D. W. S. Thorning - 1987 - 614 стор.
...parts of a degree. A radian is a larger unit which is often used in trigonometry. It is defined as the angle subtended at the centre of a circle by an arc equal to the radius of the circle. In the diagram, suppose that OP is of length 1 unit and that the arc PQ is also of length... | |
 | Roger Muncaster - 1993 - 964 стор.
...[6.1] where 0 — the angle turned through in radians. (The radian (rad) is the SI unit of angle and is the angle subtended at the centre of a circle by an arc of the circumference equal in length to the radius of the circle.) «j = the angular velocity of the... | |
 | Alexander John Anderson - 1994 - 456 стор.
...equivalent to cycles per second, symbol is Hz. megahertz IO6 hertz, symbol MHz. radian one radian is the angle subtended at the centre of a circle by an arc equal in length to the radius of the circle 1 radian= 57.296 degree approx. 1 80 degrees = n radians. degree... | |
 | Anthony Nicolaides - 1995 - 324 стор.
...plastic transparent instrument with a centre and 180 equally spaced degrees. The Radian A radian is the angle subtended at the centre of a circle by an arc equal to the length of the radius. Rg. 2-1/3 To illustrate the radian further, draw a circle with a certain radius,... | |
 | A. Roy Henderson - 1997 - 264 стор.
...divergence of well-collimated laser beams are concerned, in radians. An angle of one radian (1 rad) is the angle subtended at the centre of a circle by an arc around the circumference equal in length to the circle's radius (Figure 3.1). As the length of the... | |
 | K. K. Mohindroo - 1997 - 1000 стор.
...radians/second (rad s~]). Its dimensions are T"1. Angular velocity is a vector quantity. One radian is the angle subtended at the centre of a circle by an arc of length equal to the radius of the circle. In general, if 9 (Fig. 5.44) is the angle subtended by... | |
 | David Clarke - 1998 - 436 стор.
...radius. • Mark an arc, with the same length as the radius, on the circumference. y = 4sm(x - 60)° (e) The angle subtended at the centre of a circle by an arc equal in length to the radius is 1 radian. To find the relationship between degrees and radians, consider... | |
 | L. Bostock - 1998 - 420 стор.
...can. CIRCLE GEOMETRY Angles standing on the same arc of a circle and in the same segment are equal. The angle subtended at the centre of a circle by an arc is twice the angle subtended at the circumference by the same arc. The angle in a semicircle is a right... | |
| |
Radian is the angle subtended, at the centre of a circle, by an arc equal in length to the radius... 
