62. sin 20'sin40sin 60° sin80° ?

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sin20sin40sin80

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

Prove the following : sin 20^@ sin 40^@ sin 60^@ sin 80^@ = 3/16 .

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

The value of sin20^@sin 40^@sin 60^@sin 80^@ is

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

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

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

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

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