Verified answer

[tex]125 \times 9 {}^{ \sin {}^{2} ( \alpha ) } = 125 \times (3 {}^{ \sin {}^{2} (a) } ) {}^{2} = \\ 125 \times ( \frac{6}{5} ) {}^{2} = \frac{125 \times 36}{25} = 5 \times 36 = \\ 180[/tex]