The right triangle

In the right triangle ABC with right angle at C we know the side lengths AC = 9 cm and BC = 7 cm. Calculate the length of the remaining side of the triangle and the size of all angles.

Correct result:

c =  11.4018 cm
A =  37.875 °
B =  52.125 °

Solution:

b=9 cm a=7 cm c2=a2+b2  c=a2+b2=72+92=130=11.4018 cm
sinA=a/c  A=180πarcsin(a/c)=180πarcsin(7/11.4018)=37.875=375230"
B=90A=9037.875=52.125=52730"

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Pythagorean theorem is the base for the right triangle calculator.
See also our trigonometric triangle calculator.

 
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