Question

The value of sin 20° sin 60° sin 80° is ​

Answer 1

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Answer 2

Answer:

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Step-by-step explanation:

=> sin60[sin20.sin40.sin80]

=>√3/2[sin20.sin(60-20).sin(60+20)]

=>√3/2[sin 3(20)/4]

=>√3/2[sin 60/4]

=>√3/2[√3/2*4]

=>√3/2*√3/8

=3/16

therefore the value of din 20 sin 60 sin 80 is 3/16