sin265o + sin225o + cos235o + cos255o Using sin(90o – x) = cosx and vice versa sin265o + sin2 (90o – 65o) + cos235o + cos2(90o – 35o) = sin265o + cos265o + cos235o + sin235o = 1 + 1 = 2 (since, sin2x + cos2x = 1)
?2 - (40% of 240) = 25 X 5
4567.89 - 567.89 - 678.89 = ?
(21% of 360) ÷ 0.8 =?
180 ÷ 3 of 2 = 102 – ?
(150% of 950) ÷ ? = 25
1500 × 60% of 25% = ? 2
32% of 4080 + 24% of 455 = x% of 4000
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