Suppose $\displaystyle {A}$ is an acute angle, and $\displaystyle {\sin{{A}}}=\frac{{20}}{{29}}$, $\displaystyle {\cos{{A}}}=\frac{{21}}{{29}}$.

Find $\displaystyle {\sin{{2}}}{A}$ and $\displaystyle {\cos{{2}}}{A}$.

$\displaystyle {\sin{{2}}}{A}=$ Preview Question 6 Part 1 of 2  

$\displaystyle {\cos{{2}}}{A}=$ Preview Question 6 Part 2 of 2