Q. −20 Given that △ABC is an isosceles triangle p nie that right riangles △ADB ana △AOC are congwent
Congruent Triangles Corresponding Parts: Since triangles ADB and AOC are congruent, we can say that AD=AO and BD=OC because corresponding parts of congruent triangles are equal.
Isosceles Triangle Properties: In isosceles triangle ABC, AB=AC because two sides in an isosceles triangle are equal.
Sum of Sides in Triangles: Since AB=AC and BD=OC, we can say that AD+BD=AB and AO+OC=AC.
Equality of Sides: Therefore, AD+BD=AO+OC, which means AD=AO (because BD=OC).
Constant Value: The value of −20 is not dependent on the properties of the triangles, so the value remains −20.
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