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if o is the origin & the coordinates of any two points Q1&Q2 are (x1,y1) and (x2,y2) respectively , then prove thatOQ1.OQ2 COS(

Shivam Saket , 13 Years ago
Grade 12th Pass
anser 1 Answers
Rathod Shankar AskiitiansExpert-IITB

Last Activity: 13 Years ago

OQ1=(x1 y1)  -----vector

OQ2=(x2 y2)

 

dot prodcut = OQ1.OQ2.cos(OQ1 OQ2)  = x1*x2+y1*y2

 

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