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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`

Text Solution

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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 = 2 hati `
` therefore 2 cm` along ` x- ` axis
` (##AKS_AI_PHY_V01_P1_C03_SLV_011_S01.png" width="80%">
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