Chemistry, asked by kolasudha499, 4 months ago

cosπ7+cos2π7+cos3π7+cos4π7+cos5π7+cos6π7+cos7π7=

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Answered by kookietae8

3

Answer:

Is this really a question???

Answered by ssaibhargav999

1

-1 is 5he answer for this question

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