1. Найдите 34sin, если и << 2. 3.

1. Найдите 34sin $\alpha$ , если $cos \alpha = \frac{15}{17}$ и $\frac{3 \pi }{2}$ <<img src="https://tex.z-dn.net/?f=+%5Calpha+" id="TexFormula4" title=" \alpha " alt=" \alpha " align="absmiddle" class="latex-formula"><<img src="https://tex.z-dn.net/?f=2+%5Cpi+" id="TexFormula5" title="2 \pi " alt="2 \pi " align="absmiddle" class="latex-formula">
2. $( 9^{ \frac{ \sqrt{5} }{3} } ) ^{ \frac{3}{2 \sqrt{5} } }$
3. $log_{ \frac{1}{7} } \sqrt{7}$