Question

MATHS QUESTION
Any help for another maths questions I just don't get what to do thank you ❤

Answer 1

Look at the picture.

a) 180° - 45° = 135°


b) Use trigonometric function

$\tan(\angle DBA)=\dfrac{45}{30}\\\\\tan(\angle DBA)=1.5\\\\m\angle DBA\approx56^o$

270° - 56° = 214°