hiiii ...how can I do trigonometry.I feel some difficulty to solve questions....so plz tell me how can be prepared for this

Trigonometric is very simple it is very easy also. You first learn basic formulas like

 sin teeta= opposite side/hyportness etc. You just calculate any formula from trigonometric identities. You must learn formulas and trigonometric identities.

 

Don’t worry about that all the best.
 

@ narender 
frst of all while asking question do mention in which area you are facing the problems , so, that its a bit easy for us to give you answer acc to your requirment . 
what u need to do in trigo first is to learn the ratio , sign and all angle dependence formula by heart . 
u can use the mnemonics for learning the ratio in trigo , if u are forgetting to do that so. 
after that open up your ncert and do the solve examples , if not  able to do , then see the solution , after that come to rd sharma , solve the question from besic level their , i am sure that u can analyse where your gap exactly are , then practice on those area and then proceed to ncert exercise . 
and at frst everyone do faced some difficulty in learning trigo. and after doing all these trigo is like a cake for you . 

and let me to add up that it have a diverse application in every subject like , integration , calculus , and probability . 
SO, DO IT WITH FULL CONCENTRATION 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST ,,