The correct answer is Aa$=2\mathrm{.}671$ and Ab$=12\mathrm{.}708$

I am looking for an explanation as to how to solve it$.$ Thank you.

Two blocks A$($m$\_($A$)=5\mathrm{.}2($kg$))$ and B$($m$\_($B$)=2\mathrm{.}2($kg$))$l $=0\mathrm{.}5$m $\backslash$theta $=7\mathrm{.}3\backslash$deg $,\backslash$phi $=60\mathrm{.}1\backslash$deg and B $\text{'}$s slot is vertical. Assume the slots in which the blocks slide are smooth and each block contacts only one side of its slot at any instant.

Find the magnitude of the acceleration of block A and the magnitude of the acceleration of block B at the instant the system is released from rest.

$\backslash$table$[[$a$\_($A$),3\mathrm{.}452],[?,\backslash$times $0\%],[($m$)/($s$^(2)),$a$\_($B$)=],[13\mathrm{.}56,?],[,($m$)/($s$^(2))]]==$

Correct answer

a$\_(.).$