Question
If tan θ = 1 then sin θ . cos θ = ?
$\therefore \theta=45^{\circ} \quad \ldots . .\left[\because \tan 45^{\circ}=1\right]$
$\therefore \sin \theta \cdot \cos \theta=\sin 45^{\circ} \cos 45^{\circ}$
$=\frac{1}{\sqrt{2}} \cdot \frac{1}{\sqrt{2}}$
$=\frac{1}{2}$
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