#### Answer

The solution is $30{}^\circ 25'12''$.

#### Work Step by Step

We have to convert an angle in decimals to DMS; perform the below steps;
Step 1 – Open Ti-84 Calculator.
Step 2 – Press [MODE] key.
Step 3 – Use arrow keys to highlight DEGREE.
Step 4 – Press [ENTER] to put the calculator in degree mode.
Step 5 – Press [CLEAR] key.
Step 6– Enter the value 30.42
Step 7 – Press the keys [2ND] [APPS] [4] [ENTER] to get the angle in DMS.
Step 8 – Press [ENTER] to get the angle in decimals.
Hence, the value $30{}^\circ 25'12''$ that appeared on the calculator is the angle in DMS.