Class 11 Book Solution from S N Dey in Trigonometric Functions of Associated Angles Question No: 5.2.1(iv)
মান নির্ণয় করো : \(cos^2\frac{\pi}{8}+cos^2\frac{3\pi}{8}+cos^2\frac{5\pi}{8}+cos^2\frac{7\pi}{8}\)
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Trigonometric Functions of Associated Angles (সংযুক্ত কোণসমূহের ত্রিকোণমিতিক অপেক্ষকসমূহ) Solutions from Popular Books
Class 11 (একাদশ শ্রেণী) S N Dey (এস এন দে - একাদশ শ্রেণী) Other Chapter Solutions
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