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Three vectors vecA, vecB, vecC are shown...

Three vectors `vecA, vecB, vecC` are shown in the figure. Find angle between (i) `vecA` and `vecB` (ii) `vecB` and `vecC` , (iii) `vecA` and `vecC`

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To find the angle between two vectors we cannect the tails of the two vectors vectors we can shift ( such that trails of ` vecA ,vecB and vecC ` are connected as shown in figure
Now we can easily observe that angle between ` vecA and vecB ` is ` 60^@ , vecB and vecC ` is `15^@ ` and between ` vecA and vecC " is " 75^@`
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