Question

if |a+b|=|a-b| then what is the angle between a and b
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Answer 1

√a² + b² + 2abcosthetha = √a² + b² - 2abcosthetha

= a² + b² + 2abcosthetha = a² + b² - 2abcosthetha

= 2abcosthetha + 2abcosthetha = 0

4ab cos thetha =0

costhetha = 0

thetha = 90° Ans

Answer 2

$\huge\star\mathfrak\green{{HEY MATE...!!}}$

❤.kindly refer the above attachment✔

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