Class 11 Book Solution from S N Dey in Trigonometric Functions of Submultiple Angles Question No: 9.2.4
প্রমাণ করো :
\(\frac{1+sin\theta+cos\theta}{1+sin\theta-cos\theta} = cot\frac{\theta}{2}\)
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Trigonometric Functions of Submultiple Angles (অংশ কোণের 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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