Convert $2019$ decimal to a duodecimal number

Convert the following hexadecimal numbers to binary form.

$AC3$

Write the measure of the angle which is equal to $100°-50°50\text{'}50\text{'}\text{'}$.

Write the measure of the angle which is equal to $30°30\text{'}30\text{'}\text{'}+30°40\text{'}50\text{'}\text{'}$

Convert the following hexadecimal numbers to binary form.

$4B{C}_{16}$