Question

alegeti raspunsul corect ex 2​

Answer 1

Răspuns:

a) 45°

Explicație pas cu pas:

m∡BOC = 3* m AOB

m∡BOC +  m AOB = 90°

4* m∡AOB = 90°

m ∡AOB = 22° 30'

m ∡BOC = 67° 30'

m ∡BOC -m ∡AOB =

     67°30' - 22°30' =  45°

Answer 2

<BOC=3•<AOB

ÎNLOCUIM

<AOB+3•<AOB=90⁰

4•<AOB=90⁰

<AOB=90⁰÷4

<AOB=22⁰30'

<BOC=22⁰30'•3

<BOC=67⁰30'

<BOC-<BOA=67⁰30'-22⁰30'=45⁰

RSP A)45⁰