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In right triangle ABC, if vector A B =(1, k), vector AC =(2,1), and angle C is equal to ninety degrees, then the value of k
Vector BC=AC-AB=(1,1-K),
Angle C is equal to ninety degrees,
0=AC*BC=2+1-k=3-k,
K=3.
What is the modulus of a non-zero vector ratio? What is the modulus of a nonzero vector ratio?
The unit vector in the same direction as the original vector
What is the sufficient condition that the modulus of a over a is equal to the modulus of b over b, and b is a nonzero vector What is the sufficient condition that the module of a over a is equal to the module of b over b, and b is a nonzero vector
A vector is collinear with b vector and has the same direction
A-vector and b-vector are collinear and in the same direction
If the modulus of the non-zero vector a+b is equal to the modulus of b, then the relationship between the modulus of 2a and 2a+b is
The former is greater than the latter
Is a zero vector multiplied by a number equal to the zero vector
Yes, a vector multiplies any real number by a vector.
Is the zero vector equal to the zero vector?
A vector equality means that the magnitude and direction of two vectors are equal. A zero vector is a vector with a magnitude of zero, and its direction can be arbitrary.
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