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Referring to the Fig. in Question #47, find the tangent of
∠A. Give answer in simplest form.
<...
Mathematics, 27.10.2021 08:40 princessammarah4731
Referring to the Fig. in Question #47, find the tangent of
∠A. Give answer in simplest form.
Answers: 3
Another question on Mathematics
Mathematics, 20.06.2019 18:04
Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?
Answers: 2
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