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" In any triangle, the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides diminished by twice the product of one of those sides and the projection of the other upon that side. "
Elements of Plane and Solid Geometry - Σελίδα 186
των George Albert Wentworth - 1877 - 398 σελίδες
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Essentials of Solid Geometry

David Eugene Smith - 1924 - 238 σελίδες
...The square of the side opposite an acute angle of any triangle is equal to the sum of the squares of the other two sides diminished by twice the product...one of those sides and the projection of the other side upon it. In the £\ABC the projection of AC upon AB is the segment AD cut off on AB by a perpendicular...

Eshbach's Handbook of Engineering Fundamentals

Ovid Wallace Eshbach, Byron D. Tapley, Thurman R. Poston - 1990 - 2176 σελίδες
...perpendicular to AC. The square of the side opposite an acute angle equals the sum of the squares of the other two sides diminished by twice the product of one of those sides by the orthogonal projection of the other side upon it. In Fig. 2.8, a2 = b~ + c2 - 2b • AE. The...
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Biennial Report, Τόμοι 8-11

1889
...In any triangle the square of the side opposite an acute angle Is equal to the sum of the squares of the other two sides diminished by twice the product of one of sides and tbe projection of the other upon that side. SCHOOL LAW. 1. Name the different grades of certificates...

Information Relative to the Appointment and Admission of Cadets to the ...

Military Academy, West Point
...side opposite the obtt« angle Is equal to the sum of the squares of the other two sides, incrt.ie1' by twice the product of one of those sides and the projection of the otto' side upon it. 10 Theorem : Л line parallel to the bases of a trapezoid, passing through ti!...




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