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 answer:

a =  17.4345 cm
b =  14.2815 cm

Step-by-step explanation:

c=10 cm β=55  a2=b2+c2 cosβ=c/a a=c/cosβ=c/cos55° =10/cos55° =10/0.573576=17.434=17.4345 cm
b=a2c2=17.43452102=14.2815 cm

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Tips for related online calculators
The Pythagorean theorem is the base for the right triangle calculator.
See also our trigonometric triangle calculator.

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

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