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Trigonometric progression (Posted on 2014-08-24) Difficulty: 3 of 5
Show that :
tan [(n+1)a/2] = (sin a + sin 2a + ... + sin na)/(cos a + cos 2a + ... + cos na)

No Solution Yet Submitted by Danish Ahmed Khan    
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  Subject Author Date
SolutionsolutionAdy TZIDON2014-08-24 11:46:28
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