A Treatise on Elementary TrigonometryMacmillan & Company, 1885 - 274 sider |
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Side 190
... subtends an angle of 37 ° 19 ′ 30 ′′ at a point in the plain distant 369.5 feet from the foot of the tower . Find the height of the tower . ( 3 ) The shadow of a tower on a horizontal plain in the sun- light is observed to be 176 · 23 ...
... subtends an angle of 37 ° 19 ′ 30 ′′ at a point in the plain distant 369.5 feet from the foot of the tower . Find the height of the tower . ( 3 ) The shadow of a tower on a horizontal plain in the sun- light is observed to be 176 · 23 ...
Side 220
... subtending those angles are 105.25 feet and 76.75 feet ; find the third angle . ( 17 ) Ifb : c = 4 : 5 , a = = 1000 yards and A = 37 ° 19 ′ , find b . The student will find some Examples of Solution of Triangles without the aid of ...
... subtending those angles are 105.25 feet and 76.75 feet ; find the third angle . ( 17 ) Ifb : c = 4 : 5 , a = = 1000 yards and A = 37 ° 19 ′ , find b . The student will find some Examples of Solution of Triangles without the aid of ...
Side 254
... subtends the angles 2a and 23 respectively . Prove that the a sin a . diameter of the tower is 2- sin ß . sin ẞ- sin a ( 15 ) At P the top of a tower of height h , the angles of de- pression of two objects on the horizontal plane on ...
... subtends the angles 2a and 23 respectively . Prove that the a sin a . diameter of the tower is 2- sin ß . sin ẞ- sin a ( 15 ) At P the top of a tower of height h , the angles of de- pression of two objects on the horizontal plane on ...
Side 257
... subtends an angle a at the centre , perpendiculars are drawn to its bounding radii , then the distance between the feet of the perpendiculars is r sin a . ( 29 ) If two circles , radii a and b , touch externally , the angle between ...
... subtends an angle a at the centre , perpendiculars are drawn to its bounding radii , then the distance between the feet of the perpendiculars is r sin a . ( 29 ) If two circles , radii a and b , touch externally , the angle between ...
Side 272
... subtends the greatest angle , a circle must be described passing through A and B , and touching the line CE in the point E. In ( 15 ) the centre of the circle lies vertically above E , and in the horizontal line through the middle point ...
... subtends the greatest angle , a circle must be described passing through A and B , and touching the line CE in the point E. In ( 15 ) the centre of the circle lies vertically above E , and in the horizontal line through the middle point ...
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algebraical angle of elevation angle ROP ARITHMETIC Assistant-Master base BOOK Cambridge centre circle circular measure circumference Clifton College common logarithms cos² cos³ cosec cosine Crown 8vo decimal diameter Draw PM Edited by Rev ELEMENTARY TREATISE English equal equation Eton College Example Express Extra fcap feet Fellow of St Fellow of Trinity Find the angle Find the number formulæ fraction GEOMETRY Globe 8vo grades GRAMMAR Greek Hence HISTORY hypotenuse inscribed Introduction and Notes J. P. MAHAFFY John's College late Fellow LATIN length LL.D logarithms magnitude Mathematics miles negative numerous Illustrations observed Owens College Oxford perimeter perpendicular positive PRIMER Professor prove Quadrant radians radius regular polygon revolving line right angle School sides significant figures sin² sin³ sine student subtends tangent tower triangle ABC Trigonometrical Ratios Trinity College University yards
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