Solve sin x = 0.5 and find its principal solution.

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- Jun 17th 2013, 02:25 AMbrosnan123Trigonometric Equations
Solve sin x = 0.5 and find its principal solution.

- Jun 17th 2013, 02:41 AMProve ItRe: Trigonometric Equations
Have you tried anything?

- Jun 18th 2013, 07:52 PMmpx86Re: Trigonometric Equations
hint

If x is a variable and α is a constant

such that : sin x = sin α,

then : x = nπ + (-1)ⁿ.α, ... ∀ n ∈ ℤ.