Question

in triangle ABC, angke A -angle B =63 degrees, angle B -angle C = 18 degrees, find the measure of angle B

Answer 1

in triangle ABC
<A-<B=63
<B-<C=18
<A+<B+<C=180 Angle sum property.....(iii)
<A=63+<B.....(i)
<C=<B-18.....(ii)
putting i and ii in iii
we get,
63+<B+<B+<B-18=180
3<B=180-63+18
<B=135/3
<B=45

Answer 2

Answer:

Step-by-step explanation:

in triangle ABC

<A-<B=63

<B-<C=18

<A+<B+<C=180 Angle sum property.....(iii)

<A=63+<B.....(i)

<C=<B-18.....(ii)

putting i and ii in iii

we get,

63+<B+<B+<B-18=180

3<B=180-63+18

<B=135/3

<B=45