All factor i want is really a Function that look for is really a term readily available for current taxonomy inside a page.for instance when i wish to check is really a page obtainable in a publish_type i personally use :

<?php if('my_taxonomy' == get_post_type() // DoSomeThing) ?>

now i wish to use somthing such as this:

<?php if(is_term_in_current_taxonomy('my_term')) ?>

Gracies.

I believe what you would like is one thing such as this, put the function below in function.php:

function is_term_in_current_taxonomy($term){
    if($term == get_post_type())
        return true;
    elseif(//some condition)
        return true/false;
    :
}

finally founds things i want on my own , the conditional tags is :

in_array("BMW" , get_terms( 'cars', array('fields'    => 'names'))) AND 'products' == get_post_type()