单词	angle
释义	angle (between vectors) Given non-zero vectors a and b, let and be directed line segments representing a and b. Then the angle θ between the vectors a and b is the angle ∠AOB, where θ is taken to satisfy 0 ≤ θ ≤ π (θ in radians), or 0 ≤ θ ≤ 180 (θ in degrees). It can be expressed in terms of the scalar product by
随便看	degrees of freedom deka‐ del Delian (altar) problem delta delta function demography De Moivre, Abraham De Moivre's Theorem De Morgan, Augustus De Morgan's laws De Morgan's laws denominator dense matrix dense set density denumerable dependent equations dependent events dependent variable dependent variable depression derangement derivative derivative test

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