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प्रश्न
Solve for x : cos2 30° + sin2 2x = 1
योग
उत्तर
cos2 30° + sin2 2x = 1
sin2 2x = 1 – cos2 30°
sin2 2x =
2x = 30°
x =15°
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Trigonometric Equation Problem and Solution
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