Right triangle

It is given a right triangle
angle alpha of 90 degrees
beta angle of 55 degrees
c = 10 cm
use Pythagorean theorem to calculate sides a and b


Correct result:

a =  17.4345 cm
b =  14.2815 cm

Solution:

c=10 B=55 a2=b2+c2 cos⁡(B)=c/a a=c/cos⁡(55∘→ rad)=c/cos⁡(55∘⋅ π180 )=10/cos⁡(55∘⋅ 3.1415926180 )=17.434=17.4345 cm
b=a2−c2=17.43452−102=14.2815 cm

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

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