Question

Se considera triunghiul dreptunghic ABC in care m (A) = 90° si m (B) = x.
Aflati valoarea lui x daca
a) m (C) = x
b) m (C) = 2x
c) m (C) = 3x
d)m (C) = 4x

Answer 1

a) x+x=90
2x=90
x=90/2=45

b)x+2x=90
3x=90
x=90/3=30

c) x+3x=90
4x=90
x=90/4=22,5

d)x+4x=90
5x=90
x=90/5=18

Answer 2

a) m(B) = m(C) => ABC dreptunghic isoscel => x = 45*
b) 90 + 3x = 180 => 3x = 90 => x = 30*
c) 90 + 4x = 180 => 4x = 90 => x = 45/2
d) 90 + 5x = 180 => 5x = 90 => x = 18