Equation

(tan (p)) (cot(p)) = 1  →  p can be any angle because the tan and cot are reciprocals of each other.

(7/8) and (8/7) are another example of reciprocals.    (7/8)(8/7) = 56/56 = 1

tan p = opposite side/adjacent side    cot p = adjacent side/opposite side

(opposite side/adjacent side)(adjacent side/opposite side) = 1



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