Question

Repede va rog dau coroana!!!

Answer 1

-notam unghiurile cu ∡a,respectiv ∡b
m(∡a)+m(∡b)=90°⇒m(∡a)=90°-m(∡b)
90°-m(∡b)-m(∡b)=13°14'16''
2m(∡b)=89°59''60'-13°14'16''
m(∡b)=76°45'44''
m(∡a)=90°-m(∡b)⇔m(∡a)=13°14'16''