cos (2π/15) cos (4π/15) cos (8π/15) cos (16π/15) = 1/16.
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Hi...
dear...here is your answer!!!! given,
cos(2π/15) cos(4π/15) cos(8π/15) cos(14π/15) .
=cos(2π/15) cos(4π/15) cos(8π/15) cos(π - π/15)
=cos(2π/15) cos(4π/15) cos(8π/15) * -cos(π/15) ....
see picture!!!!!..
hope this helps you!!
Regards Brainly Star Community
#shubhendu
dear...here is your answer!!!! given,
cos(2π/15) cos(4π/15) cos(8π/15) cos(14π/15) .
=cos(2π/15) cos(4π/15) cos(8π/15) cos(π - π/15)
=cos(2π/15) cos(4π/15) cos(8π/15) * -cos(π/15) ....
see picture!!!!!..
hope this helps you!!
Regards Brainly Star Community
#shubhendu
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