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prove that sin 10^0+sin 20^0+sin 40^0+si...

prove that `sin 10^0+sin 20^0+sin 40^0+sin 50^0=sin 70^0+sin 80^0`

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prove that sin10^(0)+sin20^(0)+sin40^(@)+sin50^(0)=sin70^(0)+sin80^(@)

Prove that sin10+sin20+sin40+sin50=sin70+sin80

sin20sin40sin80

sin10^(@)+sin20^(@)+sin40^(@)+sin50^(@)=sin70^(@)+sin80^(@)

If A+B+C=0^(@) then prove that sin2A+sin2B+sin2C=-4sin A sin B sin C

Prove that: sin10^(0)sin30^(0)sin50^(@)sin70^(@)=(1)/(16)

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

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

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