Someone help with the first one
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Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
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Mathematics, 21.06.2019 21:50
Free points also plz look my profile and answer really stuff
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Mathematics, 21.06.2019 22:30
]supplementary angles are two angles that add up to . β’ complementary angles are two angles that add up to degrees. β’ adjacent angles share a and a β’ congruent angles have the measure. β’ an triangle has one angle that is greater than 90 degrees. β’ a triangle with angles 45Β°, 45Β°, and 90Β° would be a triangle
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Mathematics, 21.06.2019 23:30
In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.
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