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ANGLE BTW (i+j+k) and (i+j) is x.THEN 2SEC2

 x is

6 years ago


Answers : (1)


Dear vardana


 ANGLE BTW (i+j+k) and (i+j) is x

cosx =(i+j+k).(i+j)/|i+j+k||i+j|

        =2/√3 √2


secx =√3/√2

2sec2x =3

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