Today i am going to describe how to install Firefox Browser In kali linux.First of all we want to know what is Mozilla Firefox ?

According to Wikipedia~Mozilla Firefox is a free and open source web browser developed for Windows ,OS X and Linux with a mobile version for Android,by the Mozilla Foundation and its subsidiary,the Mozilla Corporation .Firefox uses the Gecko layout engine to render web pages,which implements current and anticipated web standards.

According to me Mozilla Firefox is one of the best Browser for hackers because in Mozilla Firefox there are many add-ons which is helpful for hacker.And it is also absolutely free .
        Now I am going to Describe the steps involved to install Firefox in Kali linux---
Steps Are :--
To install Firefox first of all remove the iceweasel by the given code below and run all the code properly.and add this line to sourcelist file :-  deb http://packages.linuxmint.com debian import 
                    To add this open your terminal and paste this code leafpad /etc/apt/sources.list  and add this code to the last portion - deb http://packages.linuxmint.com debian import
Code:
1.apt-get remove iceweasel
2.echo -e "\ndeb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main" | tee -a /etc/apt/sources.list > /dev/null
3.apt-key adv --recv-keys --keyserver keyserver.ubuntu.com C1289A29
4.apt-get update
5.apt-get install firefox-mozilla-build

Now you have successfully install the firefox .Now to open firefox go to Applications->Internet->Firefox Browser.
Note~There are several other methods to install Firefox

If you have any problem regarding this then please comment below.