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" (3) "sin10^(@)sin50^(@)sin60^(@)sin20=...

" (3) "sin10^(@)sin50^(@)sin60^(@)sin20=(sqrt(3))/(16)

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sin10^(@)sin50^(@)sin60^(@)sin70^(@)=(sqrt(3))/(16)

(i) sin10^(@)sin50^(@)sin70^(@)

Prove that: i) sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3/16 ii) sin10^(@)sin50^(@)sin60^(@)sin70^(@)=sqrt(3)/16 iii) sin20^(@)sin40^(@)sin80^(@)=sqrt(3)/8

Prove that: i) sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3/16 ii) sin10^(@)sin50^(@)sin60^(@)sin70^(@)=sqrt(3)/16 iii) sin20^(@)sin40^(@)sin80^(@)=sqrt(3)/8

sin20^(@)sin40^(@)sin60^(@)sin80^(@)

sin50^(@)-sin70^(@)+sin10^(@)=?

sin 20^(@) sin 40^(@) sin 60^(@) sin 80^(@) =(3)/(16)

Prove that sin10^@sin50^@sin60^@sin70^@=sqrt3/(16)