1.

In triangle ABC, right-angled at B, BC =16 cmand angle ACB=3/4; calculate the measure ofAB and AC.

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Answer:

More commonly the set square bears the MARKINGS of a ruler and a half CIRCLE protractor. The outer edges are TYPICALLY BEVELLED. These set squares come in two usual forms, both right triangles: one with 90-45-45 degree angles, the other with 30-60-90 degree angles.



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