Question

Two vector a and b inclined at an angle theta. Write each other have a resultqnt c which makes angle beta with a if the direction a and b are interchanged thenthe resultant will have same

Answer 1

if even directions are changed resultany will have same

$\huge \blue{magnitude}$

for your infirmation

$resultant = \\ \: \it{ r = \sqrt{a {}^{2} + b {}^{2} + 2ab \cos( \theta) } }$

$\tan( \beta ) = \it{ \frac{b \cos( \theta) }{a + b \cos( \theta) }}$