If - - - - - 0- -2 - then sin - - - -sin- -sin- -sin- a Find a

sin ( α +β +γ nbsp; )=sinαcosβcosα +cosαsinβcosγ +cosαcosβsinγ sinαsinβsinγ or nbsp; nbsp; sin ( α +β +γ nbsp; ) sinα sinβ sinγ =sinα ( c ...

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Principal Solution of Trigonometric Equation

If α , β , ...

Question

If $α, β, γ ϵ (0, \frac{π}{2})$ , then $\frac{sin (α + β + γ)}{sin α + sin β + sin γ} < a$
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