Question

Can anyone solve this? ​

Answer 1

Answer:

no I not solve this type off questions

Answer 2

|a×b|=√3a.b(because a vector can never be equal toa scalar)

|a×b|=ab sin theta

a.b=ab cos theta

equation above,we get,

sin theta =√3cos theta

=tan theta=√3

tan theta =60°or240°

then general theta =nπ+60°

so,|a+b|=√|a^|2+|b^|+2+2|a||b|cos theta