WitrynaTo find angle B in triangle ABC, we can use the law of cosines: c^2 = a^2 + b^2 - 2ab*cos (C) where a, b, and c are the side lengths of the triangle opposite to the angles A, B, and C, respectively. In this case, we are looking for angle B, and we know the lengths of all three sides of the triangle: AB = 14.6 BC = 7.5 AC = 21.4. WitrynaOther Math. Other Math questions and answers. 13 Here is triangle ABC. Work out the length of AB. Give your answer correct to 1 decimal place. Question: 13 Here is triangle ABC. Work out the length of AB. Give your answer correct to 1 decimal place.
ABC is an isosceles triangle with AB = AC and D is a point on
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Witryna14 kwi 2024 · Exercice 3:4 points Un triangle A'B'C' d'aire 27cm² est un agrandissement d'un triangle ABC rectangle en A tel que AB=3cm et AC= 2cm. A/ déterminer l'aire du triangle ABC. B/ Déterminer le coefficient d'agrandissement qui permet de passer du triangle AB au triangle A'B'C'. C/ Déterminer les longueurs A'B' et A'C' D/ Calculer … WitrynaSubstituting the right side of this equation for ∠ B in our inequality we get: 180 ° – ∠ A – ∠ C > 90 °. We know that ∠ A = 25 °, so let’s plug that in now: 180 ° – 25 ° – ∠ C > 90. Now let’s simplify this and solve for ∠ C, remembering that we need to switch the direction of inequality symbols whenever we multiply ... WitrynaFirst, here's an isosceles triangle, it has two equal length sides and two equal angles. Oh! Very clever! Now we have an equilateral triangle. Three sides of equal length and all the angles are 60 ... kirby vacuum cleaners models year made