Question

At what angle must the two forces (x + y) and (x – y) act so that the resultant may
$\sf \: be \sqrt{(x^{2} + y^{2})}$

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$\sf (a) \cos^{-1} \bigg[-\frac{(x^{2} + y^{2})}{2(x^{2} - y^{2})} \bigg)$


$\sf \: (b) \cos^{-1} \bigg[-2\frac{(x^{2} - y^{2})}{(x^{2} + y^{2})} \bigg]$


$\sf \: (c) \cos^{-1} \bigg[-\frac{(x^{2} + y^{2})}{(x^{2} - y^{2})} \bigg]$

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Answer 1

Hope this will help you Bro

$\sf\LARGE\color{black}{\colorbox{#FF7968}{T}\colorbox{#4FB3F6}{H}\colorbox{#FEDD8E}{A}\colorbox{#FBBE2E}{N}\colorbox{#60D399}{K}\colorbox{#6D83F3}{S}}$

Answer 2

Answer:

your solution is in above pic

pls mark it as brainliest