2.În triunghiul Abc dreptunghic in A cu Ac=4cm Bc=5cm calculați (tgB+tgC)^2
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3 September 2025 matematica 5 minute
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Clasă: Education Materie: matematica

2.În triunghiul Abc dreptunghic in A cu Ac=4cm Bc=5cm calculați (tgB+tgC)^2
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tgB=AC/AB=4/5

tgC=AB/AC=5/4

tgB+tgC=4/5+5/4=(4×4+5×5)/20

=41/20

(tgB+tgC)^2=41^2/20^2=1681/400

Răspunsul a fost dat în data 3 September 2025

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