Was andere dazu sagen - Rezension schreiben
Es wurden keine Rezensionen gefunden.
Andere Ausgaben - Alle anzeigen
An Introduction to Plain Trigonometry, with Its Application to Heights and ...
Keine Leseprobe verfügbar - 2018
A B C added alſo angled plain Triangle angled Triangle ABC Arch Bafe Baſe becauſe called Caſe Centre Circle Compaſſes completes conſequently contained Definition Degs deſcribe deſcribe an Arch Diſtance divides Draw equal fall fame find the Angles find the Baſe find the Perpendicular firſt follows Foot former Geometrically given half Height Houſe Hypoth Hypothenuſe AC internal Angles laſt Length Line drawn Logarithmetically look meaſured Number oblique angled plain oppoſite Angle parallel Parallelogram Perpend Point Problem proceed Prop Proportion Propoſition Queſtion Radius 90 reſpectively right angled Triangle right Line ſame Secant Sect Side A B Side BC Sine Square ſubtracted ſuch Suppoſe taken Tang Tangent thereon thoſe Trigonometry unequal Variety Wanting whole Yards Ι Ο Ν Τ Ι
Seite 62 - 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.
Seite 68 - What is the perpendicular height of a hill whose angle of elevation, taken at the bottom of it, was 46° ; and 100 yards farther off, on a level with the bottom of it, the angle was 31° ? Ans., 143.14 yards.
Seite 73 - I measured out for a base 400 yards in a right line by the side of the river, and found that the two angles, one at each end of this line, subtended by the other end and the house, were 68° 2
Seite 73 - Being on one side of a river and wanting to know the distance to a house, which stood on the other side, I measured 200 yards in a right line by the side of the river, and found that the two angles at each end of this line formed by the other end and the house were 73° 15' and 68° 2'; what was the distance between each station and the house ? Ans.
Seite 60 - As the sum of the two sides Is to their difference, So is the tan of half the sum of the unknown angles To the tan of half the difference of the unknown angles. And this tan half difference added to the half sum of two unknown angles gives the greater angle, and subtracted gives the less angle. Taking the example already given (fig. 29) : — AC + AD = 50 + 40...
Seite 11 - Triangles on the fame Bafe, and between the fame Parallels, are equal ; becaufe they are Half the circumfcribing Parallelograms.
Seite 70 - I meafured from its bottom a diftance of 40 feet, and then took the angle formed by the plane and a line drawn to the top 41"; and going 'on in the fame...