Unformatted text preview: Both are right angles; compare one pair of legs and the hypotenuse.) (g) Conclude that ∠ EAD = ∠ ADG —which means that DA bisects ∠ A . Thus D lies on all three angle bisectors. 1.4 Projection of Vectors; Dot Products Suppose a weight is set on a ramp which is inclined θ radians from the horizontal (Figure 1.27 ). The gravitational force −→ g on the weight is directed downward, and some of this is countered by the structure holding up the ramp. The e²ective force on the weight can be found by expressing −→ g as a sum of two (vector) forces, −→ g ⊥ perpendicular to the ramp, and −→ g b...
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 Fall '08
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 Calculus, Angles, Vectors, Dot Product, Dot Products, right angles

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