sir, can u explain me how to find tan inverse in log books..

We use trigonometric table to find the values of trigonometric functions and inverse trigonometric functions.

To find the value of , we look at the table and note the angle for which the tangent has the value of 0.1940, which is coming out to be 0.192 radians or 11⁰.

Hope this helps you.

Cheers!