| William Betz, Harrison Emmett Webb, Percey Franklyn Smith - Geometry, Plane - 1912 - 356 pages
...THEOREM 420. 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...one of those sides and the projection of the other** upon it. FIG. 1 FIG. 2 Given, in the triangle ABC, that p is the projection of the side b upon the... | |
| Military Academy, West Point - 906 pages
...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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