a/(sin(44))= 9/(sin(66))

解

\frac{a}{sin ( 4 4 ^{\circ} )} = \frac{9}{sin ( 6 6 ^{\circ} )}

a = \frac{9 sin ( 4 4 ^{\circ} )}{sin ( 6 6 ^{\circ} )}

十進法表記

a = 6.84358 \dots

解答ステップ

\frac{a}{sin ( 4 4 ^{\circ} )} = \frac{9}{sin ( 6 6 ^{\circ} )}

以下で両辺を乗じる:

sin (4 4^{\circ})

\frac{a}{sin ( 4 4 ^{\circ} )} = \frac{9}{sin ( 6 6 ^{\circ} )}

以下で両辺を乗じる:

sin (4 4^{\circ})

\frac{a sin ( 4 4 ^{\circ} )}{sin ( 4 4 ^{\circ} )} = \frac{9 sin ( 4 4 ^{\circ} )}{sin ( 6 6 ^{\circ} )}

簡素化

a = \frac{9 sin ( 4 4 ^{\circ} )}{sin ( 6 6 ^{\circ} )}

a = \frac{9 sin ( 4 4 ^{\circ} )}{sin ( 6 6 ^{\circ} )}