Helpppp and please explain it
tan(y)=44
find out y


Actually, it is impossible to answer that without more information. If y in degrees, radians, grads, or any of several other ways of measuring angles.
To do, take you calculators, make sure it is in "degree", "radian", or "grad" mode (Every calculator I have seen has "degree" and "radian" mode, some have "grad". I have never seen one with other modes.) Then use whatever pattern is correct to find the inverse function to tangent of 44 degrees.
Using the on-screen calculator that comes with "Windows", assuming y is in radians, click on the little "radians" radio button, enter "44", then click on the "INV" button (for the inverse function). The button that, before, said "tan" now says "". Click on that.