Find all solutions of the equation.?

Explain please

cos3(x)=√3/2

2007-02-22 12:31:42 · 2 answers · asked by Milton C 1 in Science & Mathematics ➔ Mathematics

Cos 3x = √3 / 2 = Cos п / 6

3x = п / 6

X = п / 18

X = 180° / 18 = 10°

2007-02-22 12:43:02 · answer #1 · answered by Sreekenta B 1 · 0⤊ 0⤋

3x = +/-30 +/- 360*k. Therefore x = +/-10 +/- 120*k (in degrees).

2007-02-22 13:37:07 · answer #2 · answered by fernando_007 6 · 0⤊ 0⤋

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