Question

if cos
$ifcos \alpha + 2cos \beta + 3cos \gamma = sin \alpha + 2sin \beta + 3sin \gamma = 0 \: then \: the \: value \: of \: sin3 \alpha + 8sin3 \beta + 27 \sin3 \gamma \: is$
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Answer 1

osβ+3cosγ=sinα+2sinβ+3sinγ=0thenthevalueofsin3α+8sin3β+27sin3γis