Question

If sinď± + sin2ď± + sin3ď± = 1, then the value of cos6ď± â€“ 4cos4ď± + 8cos2ď± is x. Find x

Answer 1

ணோணௌணொணோண்ணைணைண்ணுணைண்ணுணைணொணுண்ணோண்ணொண்ணோணொணுண்ணொணுண்ணைணோண்ணொணுணொணுண்ணொணுணேணைணுணெணெணணீணெணணேணுணைணுணேணொணோணௌணைணோணௌணைணௌணோணோ