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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`

Text Solution

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To find the angle between two vectors we connect the tails of the two vectors. We can shift the vectors parallel to themselves such that tails of A, B and are connected as shown in figure.

Now we observe that angle between `vecA and vecB` is `60^(@` B and C is `15^(@)` and between `vecA and vecC` is `75^(@)`
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