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What is the angle made by vector, vec...

What is the angle made by vector,
` vec A =2 hat I + 2 hat j` with x-axis ?

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Here, `A_(x) =2, A_(y) =2 . Let ` theta` be the angle whith the ` vec A` make with x-axis then
` tan theta =A)_(y) //A_(x) =2//2 =1 or theta = 45^(@)`.
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PRADEEP-KINEMATICS-3 Very short
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