Math, asked by tanmaybhardwaj07, 7 months ago

Ex. 14. Prove that
cos O + cos 20 + cos 30 + cos 40
sin 0 + sin 20 + sin 30 +sin 40
=c
coto. it's not 0. It's theta.. Please ans

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Answered by neetudwivedimaihar

0

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