CBSE Class 11-science Answered
If 3i^+4j^=R, Then is R=5 units by Pythagoras theorem?
Asked by arkabanerjee | 12 Nov, 2010, 12:00: AM
Expert Answer
let a = 3i^+4j^
then a2 = a.a = 3*3 + 4*4
= 25 = R2
=> R = sqrt(25)= 5
Answered by | 12 Nov, 2010, 09:02: PM
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