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Vector vecA is 2 cm long and is 60° abo...

Vector `vecA` is 2 cm long and is 60° above the x - axis in the first quadrant, vector `vecB` is 2cm long and is 60° below the x - axis in the fourth quadrant. Find `vecA + vecB`

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`vecR=vecA+vecB`
`vecR= 2 cos 60^(@) hati+2 sin 60 hatj+ 2 cos 60 hati-2 sin 60 hatj`
`vecR=4 cos 60 hati=2hati`
`:. 2cm` along x-aixs
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