Find sum of sin2alpha+sin3alpha+.......+...

Find sum of `sin2alpha+sin3alpha+.......+sinnalpha` where `(n+2)alpha = 2 pi`

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ARIHANT MATHS-TRIGONOMETRIC FUNCTIONS AND IDENTITIES-Exercise (Questions Asked In Previous 13 Years Exam)

Find sum of sin2alpha+sin3alpha+.......+sinnalpha where (n+2)alpha = 2...
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