# A sum of coefficients.

Algebra Level 4

If $$\sin ^{ 2 }{ A } = x$$, then

$\sin { A } \times \sin { 2A } \times \sin { 3A } \times \sin { 4A }$

is a polynomial in $$x$$, the sum of whose coefficients is:

×

Problem Loading...

Note Loading...

Set Loading...