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:

A=70∘ B=20∘→ rad=20∘⋅ π180 =20∘⋅ 3.1415926180 =0.34907=π/9 b=1.5  sin⁡B=bc  c=b/sin⁡(B)=1.5/sin⁡(0.3491)=4.3857

Try calculation via our triangle calculator.

a=c2−b2=4.38572−1.52=4.1212

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