Question

помагите решить мне срочно

Answer 1

Ответ:

$\frac{( \sin(100^{\circ} ) \cos(30^{\circ}) - \cos(100^{\circ}) \sin(30^{\circ})) {}^{2} }{ 2\sin(35^{\circ}) \cos(35^{\circ}) } = \\ = \frac{( \sin(100^{\circ} - 30^{\circ})) {}^{2} }{ \sin(2 \times 35^{\circ}) } = \frac{ \sin {}^{2} (70) }{ \sin(70^{\circ}) } = \sin(70^{\circ})$