In an isosceles triangle abc ab=ac and angle a=30°. Find angle b angle c
Answers
Answered by
43
a = 30 degrees
b and c must be equal because it is an isosceles triangle
sum of all angles = 180 degrees
a = 180 - 30/2
= 150 ÷ 2
= 75 degrees
Thus, b = 75 degrees
HOPE this helps u mate!!!
b and c must be equal because it is an isosceles triangle
sum of all angles = 180 degrees
a = 180 - 30/2
= 150 ÷ 2
= 75 degrees
Thus, b = 75 degrees
HOPE this helps u mate!!!
brijeshpbhkmgm92:
bas
what bas
tell me
no
mom
..
ooo
bye
what are you doing
Answered by
53
Given: a = 30°.
To find: The measure of b and c.
Answer:
Since one angle is given, (a = 30°), b = c as it is an isosceles triangle.
In an isosceles triangle, two angles are equal.
Since b = c, let us take its measure as x.
a + x + x = 180° (Angle Sum Property) (All angles of a triangle add up to 180°)
30° + x + x = 180°
30° + 2x = 180°
2x = 180° - 30°
2x = 150°
x = 150°/2
x = 75°
Therefore the measure of angles b and c is 75°.
Proof: Using Angle Sum Property, a + b + c = 180°
LHS: a + b + c
30° + 75° + 75°
= 180°
= RHS
Hope it helps :)
no urs onlyy
Mine only because I put bold formatting here and there. If you did the same, it would look exactly like that. :)
but still....u r an ace
Ranks don't matter. Only correct answers matter. XD
^_^
Oh..I'm part of the Brainly Stars team....and there are some rules like not sharing personal info. Hope you are not hurt. :)
hmm.....sorry to ask
That's okay. XD Happens!
^_^
Similar questions