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Maria Christina

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Prove:1) 1 / sec X - tan X = sec X + tan X 2) cot A + tan A = sec A csc A 3)sec A - 1 / sec A + 1 = 1 - cos A / 1 + cos A
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2. 642 views
Archie is 12 years older than her brother Channie. Four years from now, Channie will be two-thirds as old as Archie. How old are
1. 1 answer
2. 785 views
Find a three-digit positive integers such that the sum of all three digit is i4, the tens digit is two more than ones and if the
1. 1 answer
2. 926 views