Question Number 123507 by ajfour last updated on 26/Nov/20
Commented by mr W last updated on 26/Nov/20
$${true}\:{for}\:{any}\:\theta? \\ $$
Commented by mr W last updated on 26/Nov/20
Commented by ajfour last updated on 26/Nov/20
$${Outer}\:{triangular}\:{area}\:{above} \\ $$$${diameter}\:{and}\:{outer}\:{rectangular} \\ $$$${area}\:{below}\:{diameter}\:{are}\:{even} \\ $$$${equal}\:{for}\:{any}\:\theta,\:{i}\:{think}\:,\:{Sir}! \\ $$
Commented by mr W last updated on 26/Nov/20
Commented by mr W last updated on 26/Nov/20
$${yes}.\:{four}\:{times}\:{shaded}\:{triangle}. \\ $$
Commented by ajfour last updated on 26/Nov/20
$${C}\:{is}\:{centre}\:{of}\:{circle}.\:{Find}\:\theta. \\ $$