GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The angle between the vector î and x axis is
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90
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0
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45
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60
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Explanation:
Detailed explanation-1: -The cosines of the angles a vector makes with the cartesian coordinate axes are the direction cosines. If vector A makes an angle with the x-axis, then it’s direction cosine along x-axis is, cos= .
Detailed explanation-2: -Expert-Verified Answer Hence, the angle () made by the vector with the x-axis is 45°.
Detailed explanation-3: -Two vectors are parallel when the angle between them is either 0° (the vectors point in the same direction) or 180° (the vectors point in opposite directions) as shown in the figures below. Orthogonal vectors. Two vectors are orthogonal when the angle between them is a right angle (90°).
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