Question

the square of resultant of two forces four Newtons and three Newtons exceeds the square of resultant of two forces by 12 when they are mutually perpendicular the angle between the vectors is
a)30
b)60
c)90
d)120

Answer 1

60
The square of resultant of two forces four Newtons and three Newtons exceeds the square of resultant of two forces by 12 when they are mutually perpendicular the angle between the vectors is

Answer 2

Hi.... The answer will be 30 as the formula for finding theta is |AB|=AB cos theta...
so by applying this u can get the value cos theta=√3/2 and we know that Cos 30 = √3/2...
HOPE IT HELPS U MANASA....
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