ما يقوله الناس - كتابة مراجعة
لم نعثر على أي مراجعات في الأماكن المعتادة.
طبعات أخرى - عرض جميع المقتطفات
acute added adjacent altitude ambiguous angle apparent base CALCULATION centre chords circle complement cosec cosine cutting declination describe diameter diff difference distance draw equal equation Example expressions Extend extent will reach feet former formulæ given given side gives greater greater than 90 Greenwich half height Hence horizon hypothenuse included increase kind latitude latter less than 90 logarithms longitude manner means measured meridian moon's Note object oblique observed obtain opposite opposite angle passing perpendicular plane plane triangle points pole PROBLEM quadrant radius remaining required to find rest right ascension rising RULE scale semitangent side similar sine sphere star substituted subtracted sun's supplement tables taken tangents THEOREM trigonometry true whence
الصفحة 1 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
الصفحة 352 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
الصفحة 386 - The sum of any two sides of a spherical triangle is greater than the third side, and their difference is less than the third side.
الصفحة vii - The rectangle contained by the diagonals of a quadrilateral inscribed in a circle is equal to the sum of the two rectangles contained by its opposite sides.
الصفحة 17 - To find the other side: — as the sum of the two given sides is to their difference, so is the tangent of half the sum of their opposite angles to the tangent of half their difference...
الصفحة 20 - As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
الصفحة 8 - C 76° 45i'. 2. Given the three sides 58, 39, and 46 ; to find the angles. 173. Any right lined figure whatever, whose sides and angles are given, may be constructed, by laying down the sides from a scale of equal parts, and the angles from a line of chords. Ex. Given the sides AB (Fig.
الصفحة 3 - Sine, or Right Sine, of an arc, is the line drawn from one extremity of the arc, perpendicular to the diameter which passes through the other extremity. Thus, BF is the sine of the arc AB, or of the supplemental arc BDE.