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If a = 2π/7 Find sina + sin2a + sin4a In Therms of √p/q Then Find (p+q)

If a = 2π/7 Find sina + sin2a + sin4a In Therms of √p/q Then Find (p+q)

Grade:11

1 Answers

Vikas TU
14149 Points
4 years ago
Use formulae:
sinc + sind for first two terms then again alternate with remaing sin4a ter.
Conjugate them in pairs.
After then finally put a = 2pi/7

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