Solve for x, 0° ≤ x ≤ 90°
(i) 4 cos2 2x - 3 = 0
(ii) 2 sin2 x - sin x = 0
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For the following frequency distribution, draw an ogive and then use it to estimate the median.
For the same distribution, as given above, draw a histogram and then use it to estimate the mode.