Question Number 143856 by gsk2684 last updated on 19/Jun/21
$$\mathrm{if}\:\frac{\mathrm{cos}^{\mathrm{4}} \mathrm{x}}{\mathrm{cos}^{\mathrm{2}} \mathrm{y}}+\frac{\mathrm{sin}^{\mathrm{4}} \mathrm{x}}{\mathrm{sin}^{\mathrm{2}} \mathrm{y}}=\mathrm{1then}\:\mathrm{find}\: \\ $$$$\:\frac{\mathrm{cos}^{\mathrm{4}} \mathrm{y}}{\mathrm{cos}^{\mathrm{2}} \mathrm{x}}+\frac{\mathrm{sin}^{\mathrm{4}} \mathrm{y}}{\mathrm{sin}^{\mathrm{2}} \mathrm{x}} \\ $$
Commented by justtry last updated on 19/Jun/21
$${click}\:{view}\:{all},\:{click}\:{view}\:{older} \\ $$$${Find}\:{answered}\:{by}.. \\ $$
Commented by justtry last updated on 19/Jun/21
