Verify: $8 sin 2 x cos 4 x sin 6 x$ , when $x = 15^{0}$
$[2]$

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Solution

$8 sin 2 x cos 4 x sin 6 x$ where, $x = 15^{0}$ .
$8 sin 2 x cos 4 x sin 6 x = 8 sin 2 (15) cos 4 (15) sin 6 (15) = 8 \times sin 30 \times cos 60 \times sin 90 = 8 \times \frac{1}{2} \times \frac{1}{2} \times 1 = 2$
$[2]$

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