Site and admin redirect to new domain with htaccess

Hi,

I want to redirect my site to another domain. Also want to redirect /wp-admin and /wp-login.php to another domain by htaccess.

Suppose,
https://www.mysite.com is my existing site url and
https://www.redirectsite.com I want to redirect on this site.

I want to redirect,

https://www.mysite.com  ->  https://www.redirectsite.com
https://www.mysite.com/wp-admin  ->  https://www.redirectsite.com
https://www.mysite.com/wp-login.php  ->  https://www.redirectsite.com

This is my htaccess

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Any one can help please.
Thanks.