Question

if
${xsin}^{3}+ {ycos}^{3} = sin \times cos$
and
$xsin = ycos$
prove that
${x}^{2 } + {y }^{2} = 1$

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Answer 1

Answer:

it is a bit lengthy solution ... but you can reduce steps , i made them because i don't know the right approach so i have to go with every step.