A 9. In the above right triangle, AC 9 and BC p. Find algebraic expressions for the following involving p. Your answers do not involve 0. You can use sqrt (x) or x^0.5 for the square root a. (a) tan 0 (b) The length of side AB. (c) csc e (d) cos?e (a) tan 0 = p/9 (b) The length of side AB = sqrt(81+p^2) (c) csc 0= sqrt(81+p^2)/p (d) Which of these is cos-0? p2 - 81 p2 + 81 81 + p2 81-p2 81 - p2 81 18p 18p O None of these. 81 + p2 81 + p2 81- p2 81 + p- 81 + p2

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