The aspect ratio

The aspect ratio of the rectangular triangle is 13: 12: 5. Calculate the internal angles of the triangle.

Correct result:

A =  90 °
B =  67.3801 °
C =  22.6199 °

Solution:

$C=90-B=90-67.3801=22.619{9}^{\circ }=2{2}^{\circ }3{7}^{\mathrm{\prime }}11\mathrm{"}$

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