Answer:
Vectors are usually described in terms of their components in a coordinate system. Even in everyday life we naturally invoke the concept of orthogonal projections in a rectangular coordinate system. For example, if you ask someone for directions to a particular location, you will more likely be told to go 40 km east and 30 km north than 50 km in the direction 37° north of east.
In a rectangular (Cartesian) xy-coordinate system in a plane, a point in a plane is described by a pair of coordinates (x, y). In a similar fashion, a vector
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A
in a plane is described by a pair of its vector coordinates. The x-coordinate of vector
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A
is called its x-component and the y-coordinate of vector
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A
is called its y-component. The vector x-component is a vector denoted by
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A
x. The vector y-component is a vector denoted by
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A
y. In the Cartesian system, the x and y vector components of a vector are the orthogonal projections of this vector onto the x– and y-axes, respectively. In this way, following the parallelogram rule for vector addition, each vector on a Cartesian plane can be expressed as the vector sum of its vector components:
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
12-1=11
Step-by-step explanation:
90+115+65=270
360-270=90
Answer:
U=90°
So on the first one, check the first picture, solve for "x" and "y" respectively
on the second one, check the second picture, the left-half, solve for "x"
on the last one, are they similar? check the second picture, right-half
Answer: your right answer is option 2
