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Stastement - 1 alpha and beta are tow di...

Stastement - 1 `alpha and beta` are tow distinct solutions of the equations `a cosx+b sin x=c, then tan ((alpha+beta)/2)` is independent for c,
Statement 2. Solution `cosx+bsinx=c` is possible, if `-sqrt(a^2+b^2)le C le sqrt(a^2+b^2)`

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