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Maths Puzzle
Numerical Ability
What is the area of a triangle with the sides of 2.6 ft., 3.4 ft., and 4.1 ft.
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book Other Question
Find the probability of drawing an ace and a jack when two cards are drawn (without replacement) from a standard deck of cards
simplify these expressions:
(2cotB)/(1+cot^B)
the answer is supposed to be 2cosBsinB but i have no idea how that occurs.