# Right angled triangle 3

Side b = 1.5, hypotenuse angle A = 70 degrees, Angle B = 20 degrees. Find its unknown sides length.

Correct result:

c =  4.3857
a =  4.1212

#### Solution:

Try calculation via our triangle calculator.

$a=\sqrt{{c}^{2}-{b}^{2}}=\sqrt{4.385{7}^{2}-1.{5}^{2}}=4.1212$

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