Step 1:

Obsrve the circuit:

The circuit is a RLC parallel circuit.

The inductance is $\"\"$ .

The capacitance is $\"\"$ .

The resonant frequency is $\"\"$ .

Substitute $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

$\"\"$

$\"\"$ .

The angular frequency at the circuit is resonant is $\"\"$ .