Question Number 88289 by Power last updated on 09/Apr/20
Commented by ajfour last updated on 09/Apr/20
$${this}\:{has}\:{been}\:{solved}\:{before}.. \\ $$
Commented by Power last updated on 09/Apr/20
$$\mathrm{can}\:\mathrm{you}\:\mathrm{show}\:\mathrm{me} \\ $$
Commented by ajfour last updated on 09/Apr/20
$${shall}\:{try}\:{by}\:{tomorrow},\:{may}\:{be} \\ $$$${mrW}\:{sir},\:{has}\:{an}\:{idea}\:{of}\:{the}\:{Q}#. \\ $$
Commented by Power last updated on 09/Apr/20
$$\mathrm{sir}\:\mathrm{please} \\ $$
Commented by mr W last updated on 09/Apr/20
$${is}\:{the}\:{big}\:{black}\:{circle}\:{the}\:{unit}\:{circle}? \\ $$$${is}\:{its}\:{radius}\:{equal}\:{to}\:\mathrm{1}? \\ $$$$ \\ $$$${anyway},\:{i}\:{think}\:{the}\:{answer}\:{is}\:{not} \\ $$$${unique},\:{i}.{e}.\:{there}\:{are}\:{two}\:{possible} \\ $$$${values}\:{for}\:{r}. \\ $$