The aspect ratio

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

Correct answer:

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

Step-by-step explanation:

a:b:c=13:12:5 a = 13x b = 12x c = 5x  a2 = b2+c2 (13x)2 = (12x)2 + (5x)2 132 = 122 + 52 169 = 144 + 25 169 = 169  A=90=90
sin B = ab = 13x12x  B=π180°arcsin(12/13)=67.3801=67°2249"
C=90B=9067.3801=22.6199=22°3711"

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Check out our ratio calculator.
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See also our trigonometric triangle calculator.

 
We encourage you to watch this tutorial video on this math problem: video1   video2

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