Isosceles triangle 10

In an isosceles triangle, the equal sides are 2/3 of the length of the base. Determine the measure of the base angles.

Final Answer:

B =  41.4096 °

Step-by-step explanation:

a = c = 32 b cos B =  ab/2 cos B =  32 bb/2 cos B =  321/2  B1=arccos(2/31/2)0.7227 rad  B=B1  °=B1 π180   °=0.7227 π180   °=41.41  °=41.4096=41°2435"

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Calculation of an isosceles triangle.
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algebraplanimetricsgoniometry and trigonometryUnits of physical quantitiesGrade of the word problem

 
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