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B tthe point |
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Answer» 5cos²60° + 4sec²30° -tan²45° -------------------------------------------------------sin²30° + cos²30° => 5× (1/2)² + 4 ×(2/√3)² - (1)² ---------------------------------------------------(1/2)² + (√3/2)² => 5×1/4 + 4× 4 /3 -1 -----------------------------------1/4 + 3/4 => 5/4 + 16/3 -1 -----------------------------1 + 3/4 => 15 + 64 - 12/12 { lcm}------------------------------4/4 =>55/12 = 21/4 55/12 |
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