LC circuit inductive coupling

for LC circuit i have values of inductance and capacitance. can you suggest me how to match this circuit with existing one whose impedance is known. or how to find the impedance when inductance and capacitance are given

In general...

If little current is available then you need greater Henry value, smaller Farad value.

If ample current is available then you can use small Henry value, large Farad value.

Use the formala for reactance to find out impedance of the components (at your operating frequency). This will provide a value for impedance matching.

The ratio between L and C has a big effect on your Q and/or bandwidth. Of course the ohmic resistance also is a big factor.

can you tell me that formula and how to calculate or use it ?

Web article discussing LR and RC circuits, with equations.

http://zone.ni.com/devzone/cda/ph/p/id/217

Resonance and RLC circuits.

http://www.allaboutcircuits.com/vol_2/chpt_6/5.html

Simple series resonance.

http://www.allaboutcircuits.com/vol_2/chpt_6/3.html

Best formula to use depends on actual circuit configuration for all included elements and if it is a ideal calculation or if real world losses should be included.
Formulas and examples: http://electriciantraining.tpub.com/14181/index.htm