Solves for the value of variable x, and finds the measure of the unknown angle.

Well why not
for that concept, yup it help us'
and also it helping us to make things possible
by knowing that your capable and able to do things works and when its all about goals in your life that you need to achieve.

if its all about money for me,just need to be focus of what i'm doing by the combination of that concept, you can allways gain for it.