An elementary treatise on plane trigonometryMacmillan, 1858 - 106 sider |
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Side 11
... tower AB on the other side . He observes by an in- strument made for the purpose , the angle which CA makes with the horizontal line CB . ( Let this be a ) . He then places a mark at C , and measures the distance CD ( a feet ) at right ...
... tower AB on the other side . He observes by an in- strument made for the purpose , the angle which CA makes with the horizontal line CB . ( Let this be a ) . He then places a mark at C , and measures the distance CD ( a feet ) at right ...
Side 12
... tower . Ex . a = 50 yards , ẞ = 45 ° , a = 30 ° , = height of tower = 50 × 1 × 25 yards . Similarly we might find the breadth of the river . 14. The two principal instruments by which observations are taken in surveying are the sextant ...
... tower . Ex . a = 50 yards , ẞ = 45 ° , a = 30 ° , = height of tower = 50 × 1 × 25 yards . Similarly we might find the breadth of the river . 14. The two principal instruments by which observations are taken in surveying are the sextant ...
Side 15
... tower 200 feet high . Shew that the angle it subtends at a place 100 feet from the foot of the tower is 6 ' . Given tan 63 ° .27 ' 2 , tan 63 ° . 33'2.01 . = 25. The angles of depression of the top and bottom of a column observed from a ...
... tower 200 feet high . Shew that the angle it subtends at a place 100 feet from the foot of the tower is 6 ' . Given tan 63 ° .27 ' 2 , tan 63 ° . 33'2.01 . = 25. The angles of depression of the top and bottom of a column observed from a ...
Side 16
... tower . 26 7. Construct the angle whose tangent is √5 – 1 . 8. At the foot of a mountain the elevation of its ... tower on the other side ; on retreating a feet he finds a tan a tan B its elevation to be B : the height of the tower is ...
... tower . 26 7. Construct the angle whose tangent is √5 – 1 . 8. At the foot of a mountain the elevation of its ... tower on the other side ; on retreating a feet he finds a tan a tan B its elevation to be B : the height of the tower is ...
Side 17
... tower the nearest distance ( a ) of which from the road is known ; at the same time he observes the angular distance ẞ of the top of the tower from an object in the road . sin α The height of the tower is a √ ( cos2 a cos2 B ) * · 15 ...
... tower the nearest distance ( a ) of which from the road is known ; at the same time he observes the angular distance ẞ of the top of the tower from an object in the road . sin α The height of the tower is a √ ( cos2 a cos2 B ) * · 15 ...
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An Elementary Treatise on Plane Trigonometry Richard Dunkley Beasley Ingen forhåndsvisning tilgjengelig - 2019 |
Vanlige uttrykk og setninger
1+tan a+b+c a+B+y a+tan angle AOP AOP₁ arithmetical progression BERNARD DRAKE circular measure cloth complement Construct the angle cos² cosec cosine cot² cotangent Crown 8vo decimal distance equal equation Euclid EXAMPLES Fcap feet Fellow of St Fellow of Trinity Find the number foot formulæ given height horizontal plane hypothenuse inscribed circle John's College late Fellow loga logarithms M.A. Fellow magnitude miles negative angle number of degrees observes the angle opposite sides perpendicular polygon positive quadrant radii radius respectively revolving line right angle right-angled triangle sec² secant Second Edition Sermons sewed Shew sides and angles sin ß sin² sin² ß sin³ tan¹ tan² tan³ tangent tower Treatise Trigono Trigonometrical Ratios Trinity College unit of length University of Cambridge vers yards
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