The ratio of the shorter side adjacent to an acute angle of a plane right triangle to the side opposit |
The ratio of the shorter side adjacent to an acute angle of a plane right triangle to the side opposit |
Related Terms |
COSINEThe ratio of the side adjacent to an acute angle of a plane right triangle to the hypotenuse. The expression NATURAL COSINE is sometimes used to distinguish the cosine from its logarithm (called LOGARITHMIC COSINE). |
SINEThe ratio of the side opposite an angle of a plane right triangle to the hypotenuse. The expression NATURAL SINE is used to distinguish the sine from its logarithm (called LOGARITHMIC SINE). |
COSECANTThe ratio of the hypotenuse of a plane right triangle to the side opposite one of the acute angles o |
HYPOTENUSEThe side of a plane right triangle opposite the right angle; the longest side of a plane right triangle |
OBLIQUITY OF THE ECLIPTICThe acute angle between the plane of the ecliptic and the plane of the celestial equator, about 23° 27'. |
RIGHT TRIANGLEA triangle one angle of which is 90°. |
ANGLE OF IMPACTThe acute angle between the tangent to the trajectory at the point of impact of a projectile and the plane tangent to the surface of the ground or target at the point of impact. |
NEWTONIAN TELESCOPEA reflecting telescope in which a small plane mirror reflects the convergent beam from the speculum to an eyepiece at one side of the telescope. After the second reflection the rays travel approximately perpendicular to the longitudinal axis of the telescope. |
ACUTE ANGLEAn angle that is greater than 0 degrees but less than 90 degrees. |
GEODETIC LONGITUDEThe angle between the plane |
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