kjevans200169
kjevans200169
21-05-2019
Mathematics
contestada
Find u•v when u= 12i+4j and v=15i-5j
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prashanty345p1uxhf
prashanty345p1uxhf
21-05-2019
u.v= (12i+4j).(15i-5j)
=180-20
=160 ans..
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