$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ? 

$\sin \theta +\cos \theta =1$ হলে $3\sin \theta .\cos \theta =$ ?