Question

Can someone please help me find the value of the angles

- I named them already I just need help finding them

Also can u leave me a hint
Of which formula I should use.

Answer 1

<a=90 (right angle)

<b=180-30-90=60

<c=30 (given)

<d=180-30=150

<e=<c=30

everything is in degrees, and all you need to know to solve problems like this is that the angle of a straight line is 180 degrees (sorry my explanation isn't the best, let me know if you need any clarifications)