The direction of vector in space is specified by: A.one angle B.two angle C.three angle D. None
Answers
Answer:
Orthogonal coordinates
When a unit vector in space is expressed, with Cartesian notation, as a linear combination of i, j, k, its three scalar components can be referred to as direction cosines. The value of each component is equal to the cosine of the angle formed by the unit vector with the respective basis vector.
The direction of a vector in space is specified by three angles.
In three-dimensional space, a vector can be specified by three angles: Azimuth, Elevation, and Tilt angles. Azimuth angle specifies the horizontal direction of the vector, Elevation angle specifies the vertical direction, and Tilt angle specifies the rotation about the vector. Together, these three angles uniquely specify the direction of the vector in space.
Option A - one angle is incorrect, as it takes three angles to specify the direction of a vector in space.
Option B - two angle is incorrect, as it takes three angles to specify the direction of a vector in space.
Option C - three angle is correct, as it takes three angles to specify the direction of a vector in space.
Option D - None is incorrect, as it takes three angles to specify the direction of a vector in space.
So the correct answer is C - three angle.
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