Let a be greater than or equal to 0, B be greater than or equal to 0, B divided by 2 + a = 1, then the maximum value of a * √ (1-B ^ 2) is?

When B = 0 √ (1-B ^ 2) has a maximum value of 1
B divided by 2 + a = 1
Then when B = 0, a = 1
Then the maximum value of a * √ (1-B ^ 2) is 1

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