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Find the value of Cos square10+cos square50+ cos square 70 =?

Find the value of Cos square10+cos square50+ cos square 70 =?

Grade:12th pass

1 Answers

Ayanava Datta
40 Points
4 years ago
the answer of the given question will be 1.5/(3/2) 
this answer will be come by using submultiple multipal formula 

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