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" 2.1."quad sin20.sin40.sin60.sin80=(3)/...

" 2.1."quad sin20.sin40.sin60.sin80=(3)/(16)

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sin20sin40sin80

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

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

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

Prove that: "sin"20^0"sin"40^0"sin"60^0"sin"80^0=3/(16)

Prove that: "sin"20^0"sin"40^0"sin"60^0"sin"80^0=3/(16)

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

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

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

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