Math, asked by rajantandu1974, 9 months ago

Find the value of: cos (pi/9) . cos(3pi/9) . cos(5pi/9) . cos(7pi/9)

Answers

Answered by supreetgill2000

4

Answer:

0.9966

Step-by-step explanation:

cos(pi/9)= 0.999

cos(3pi/9)=0.999

cos(5pi/9)=0.999

cos(7pi/9)=0.999

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