Math, asked by MohammadAbbas3526, 1 year ago

The value of cos2π7+cos4π7+cos6π7cos⁡2π7+cos⁡4π7+cos⁡6π7 is

Answers

Answered by aanya1420
0
the answer is 42
cos2π7+cos4π7+cos6π7cos2π+7+cos4π7+cos6π7=42
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