Question

Angle B = ___ degrees, rounded to the nearest tenth.

Answer 1

Ok, we can find x with the Pythagoras theorem, considering that the lower leg is half of 42, so it's 21. Let's do it:

$24^2=x^2+21^2$

We need clear x:

$576=x^2+441$$x^2=576-441$$x^2=135$$x=\sqrt[]{135}$$x\approx11.6$

x is equal to 11.6 rounded to the nearest tenth. ​