Solve For $a . ( a > 0 )$ $$a ^ { 2 } + b ^ { 2 } + c ^ { 2 } = d ^ { 2 }$$

question 45

Multiple Choice

Solve for $a . ( a > 0 )$
$$a ^ { 2 } + b ^ { 2 } + c ^ { 2 } = d ^ { 2 }$$

• A) \(a = \pm \sqrt { d ^ { 2 } - b ^ { 2 } - c ^ { 2 } }\)
• B) \(a = \sqrt { d ^ { 2 } - b ^ { 2 } - c ^ { 2 } }\)
• C) \(a = d - b - c\)
• D) \(a = \pm ( d - b - c )\)

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Security Thread

A thin strip of metal or plastic embedded in paper currency and valuable documents as a measure against counterfeiting.