Practicing Success
Practicing Success
CUET Preparation Today
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a b c d |
a |
$ A_1 = 4 , A_2 = 3 $ $ R = \sqrt {A_1^2 + A_2^2 + 2A_1A_2 cos 90^0} = \sqrt {A_1^2+A_2^2} = 5$ |
