Find the smaller diagonal of a rhombus with sides 19 and an acute angle of 60 degrees.

univerkov | August 5, 2021 | education

In a triangle <ABC B = 60 °; <BAC = <BCA = 1/2 A; <A = 1/2 (360 ° – 2 * 60 °) = 120 °;

<BAC = <BCA = 60 °;

So triangle ABC is equilateral; AC = AB = 19.

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