Question

Решите по заданной формуле:S=12*d1*d2*sinA
S=8,75 d1=14 sinA=112 d2=?

Answer 1

$S=frac{1}{2}*d_{1}*d_{2}*SinA=frac{d_{1}*d_{2}*SinA}{2}\\2S=d_{1} *d_{2}*SinA\\d_{2}=frac{2S}{d_{1}*SinA } =frac{2*8,75}{14*frac{1}{12} }=frac{17,5}{frac{7}{6} }=frac{17,5*6}{7}=15$