Trigonometry for Beginners with Numerous ExamplesMacmillan, 1868 - 200 σελίδες |
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Σελίδα 29
... feet from the foot of a tower the tower subtends an angle of 30 ° ; find the height of the tower . 10. A base AB of 100 yards is measured close to the bank of a river , and a tree C on the other bank is observed from A and B ; the angle ...
... feet from the foot of a tower the tower subtends an angle of 30 ° ; find the height of the tower . 10. A base AB of 100 yards is measured close to the bank of a river , and a tree C on the other bank is observed from A and B ; the angle ...
Σελίδα 30
... feet high standing at the top of a mast subtends an angle whose tangent is at a point on the deck 33 feet from the foot of the mast : find the height of the mast . 15. The upper half of a post , seen from a point on a level with the ...
... feet high standing at the top of a mast subtends an angle whose tangent is at a point on the deck 33 feet from the foot of the mast : find the height of the mast . 15. The upper half of a post , seen from a point on a level with the ...
Σελίδα 75
... feet , 13 feet , and 2 feet respec- tively , find C. 7. The sides of a triangle are 7 , 8 , 13 : find the greatest angle . 8. The sides of a triangle are respectively 13 and 15 feet , and the cosine of the included angle is 33 : find ...
... feet , 13 feet , and 2 feet respec- tively , find C. 7. The sides of a triangle are 7 , 8 , 13 : find the greatest angle . 8. The sides of a triangle are respectively 13 and 15 feet , and the cosine of the included angle is 33 : find ...
Σελίδα 93
... feet in PA ( n x 5280 ) 2 2 x 3960 x 5280 = 528n2 2 x 396 Thus if n = 1 we have h nearly ; if n = 2 we have h = 2 = 2 3 2 = n2 . 3 of a foot 8 inches very = of 4 feet = 32 inches very nearly . The surface of still water though ...
... feet in PA ( n x 5280 ) 2 2 x 3960 x 5280 = 528n2 2 x 396 Thus if n = 1 we have h nearly ; if n = 2 we have h = 2 = 2 3 2 = n2 . 3 of a foot 8 inches very = of 4 feet = 32 inches very nearly . The surface of still water though ...
Σελίδα 94
... feet high are 30 ° and 60 ° respectively : find the height of the column . 2. At the foot of a mountain the elevation of its summit is found to be 45 ° . After ascending for one mile , at a slope of 15 ° , towards the summit , its ...
... feet high are 30 ° and 60 ° respectively : find the height of the column . 2. At the foot of a mountain the elevation of its summit is found to be 45 ° . After ascending for one mile , at a slope of 15 ° , towards the summit , its ...
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Trigonometry for Beginners, with Numerous Examples Isaac Todhunter Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2010 |
Συχνά εμφανιζόμενοι όροι και φράσεις
A-sin A+B+C Algebra angle increases angle PAB angles in terms angles included AP coincides AP moves Arithmetical Arithmetical Progression B-cos Cambridge centre circle circular measure circumference cloth cos² cos³ cosec cosine cotangent Crown 8vo decreases numerically determine distance draw PM perpendicular ELEMENTARY Euclid example expression Fcap feet figure find log find the height formulæ four right angles given angle Given log Hence hypotenuse increases from 180 inverse notation L sin logarithm Mathematical multiple of four negative and decreases number of degrees observe the angle opposite side plane positive angle preceding Article present Chapter quadrant PM regular polygon right-angled triangle sec² secant Second Edition shew sin A sin sin A+ sin sin sin sin² sin³ sine student suppose Tables tangent TREATISE Trigono Trigonometrical Ratios vers yards zero ОР
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