state law of parallelogram vector to find the magnitude of resultant with altitude.
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Explanation:
Let P and Q be two vectors acting simultaneously at a point and represented both in magnitude & direction by two adjacent sides OA and OD of a parallelogram OABD as shown in figure. Let θ be the angle between P and Q and R be the resultant vectors. According to parallelogram law of vector addition, diagonal OB represents the resultant of P and Q.
So, R=P+Q
From triangle O
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