heya mate !!!!
plz help me in solving this question
if the magnitude of two vectors a and b is 4 and 6 respectively and angle between them is 30° . then find:
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khushirana1723:
plz answer my question
its urgent
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a= 4
b= 6
A+B= √(a^2+ b^2 + 2ab cos 30)
= √( 16 + 36 +2(4)(6) √3/2)
= √52 + 24√3
= 2√(13+ 6√3)
A- B= √(a^2 + b^2 + 2ab cos( 180-30)
= √16+36 - 2(4)(6)cos30
= √52 - 2(4)(6)√3/2
=√52- 24√3
= 2√13-6√3
hey u haven't got it???
Actually No
because i don't asked u this
Then
i asked u -vector + vector b and 2) -vector a-vector b
its magnitude,here direction can be said by angle which it makes
ohj
ohk
thanks
ohk
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