Two vectors (a and b) are at an angle of 60° with each other. Their resultant makes an angle of 45° with vector a . If

Two vectors (a and b) are at an angle of 60° with each other. Their resultant makes an angle of 45° with vector a . If | vector b | = 2 unit, then | vector a | is

√ 3
√ (3 - 1)
√ (3 + 1)
√ 3/2

Two vectors (a and b) are at an angle of 60° with each other. Their resultant makes an angle of 45° with vector a . If

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