3-6 할리데이 10판 솔루션 일반물리학

$$ \vec a:(10.5\ut{m},20.0^\circ) $$ $$\vec a = 10.5\cos\(20.0^\circ\)\hat i+10.5\sin\(20.0^\circ\)\hat j$$
(a)$a_y=?$ $$ \begin{aligned} a_x&=10.5\sin\(20.0^\circ\)\\ &\approx 3.59\ut{m}\\ \end{aligned} $$
(b)$a_x=?$ $$ \begin{aligned} a_x&=10.5\cos\(20.0^\circ\)\\ &\approx 9.87\ut{m}\\ \end{aligned} $$