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For A in R, P.T (i) sinAsin(pi/3+A)sin(p...

For `A in R`, P.T (i) `sinAsin(pi/3+A)sin(pi/3-A)=1/4sin3A` (ii) `sin20^@sin40^@sin60^@sin80^@=3//16`

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Prove that sin 20^@ sin 40^@ sin 60^@ sin 80^@=3/16 .

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

The value of sin20^@ sin40^@ sin60^@ sin80^@

sin20^(0)sin40^(0)sin60^(0)sin80^(@)=(3)/(16)

Prove the following: sin20^@sin40^@sin60^@sin80^@=3/16

Show that sin20^o sin40^o sin60^o sin80^o =3/16

Prove that: sin20^0sin40^0sin60^0sin80^0=3/(16)

Prove that: sin20^0sin40^0sin60^0sin80^0=3/(16)

Prove that sin20^@sin40^@sin80^@=sqrt3/8

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