Question
Bahasa Melayu
Bagi fungsi y = cos 2x, dengan keadaan x diukur dalam darjah, berapakah bilangan kitaran lengkap yang dibuat oleh graf itu dari x = 0 darjah hingga x = 360 darjah?
English
For the function y = cos 2x, where x is measured in degrees, how many complete cycles does the graph make from x = 0 degrees to x = 360 degrees?
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Solve sin x = k and cos x = k for 0° ≤ x ≤ 360°
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