A Treatise on Elementary TrigonometryMacmillan & Company, 1885 - 274 sider |
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Side 61
... tower the angle of elevation of the top of the tower is observed to be 60o . Find the height above the point of observation of the top of the tower . P x ft . 60 ° 100 ft . M In measuring the angle of depression the telescope is turned ...
... tower the angle of elevation of the top of the tower is observed to be 60o . Find the height above the point of observation of the top of the tower . P x ft . 60 ° 100 ft . M In measuring the angle of depression the telescope is turned ...
Side 62
... tower ; let a horizontal line through O meet the foot of the tower at the point M. Then OM = 100 feet , and the angle MOP = 60o . Let MP contain x feet . Then MP OM tan MOP - tan 60 ° = √3 3C = √3 . 100 .. = 100.√3 = 100 × 1 · 7320 ...
... tower ; let a horizontal line through O meet the foot of the tower at the point M. Then OM = 100 feet , and the angle MOP = 60o . Let MP contain x feet . Then MP OM tan MOP - tan 60 ° = √3 3C = √3 . 100 .. = 100.√3 = 100 × 1 · 7320 ...
Side 63
... tower , the angle of elevation of the top of the tower is observed to be 60o : what is the height of the tower ? ( 3 ) From the top of a vertical cliff , the angle of depression of a point on the shore 150 feet from the base of the ...
... tower , the angle of elevation of the top of the tower is observed to be 60o : what is the height of the tower ? ( 3 ) From the top of a vertical cliff , the angle of depression of a point on the shore 150 feet from the base of the ...
Side 64
... tower 100 feet high stands on the top of a cliff ; from a point on the sand at the foot of the cliff the angles of elevation of the top and bottom of the tower are observed to be 75 ° and 60 ° respectively ; find the height of the cliff ...
... tower 100 feet high stands on the top of a cliff ; from a point on the sand at the foot of the cliff the angles of elevation of the top and bottom of the tower are observed to be 75 ° and 60 ° respectively ; find the height of the cliff ...
Side 190
... tower standing on a horizontal plain 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 ...
... tower standing on a horizontal plain 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 ...
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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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