6. In an isosceles triangle the base angles are equal, the angle ar vertex is 30. Find the base angles
Answers
Answered by
1
Let the base angles be
′
x
′
Therefore,
x+x+40
∘
=180
∘
[Given]
2x=180
∘
−40
∘
2x=140
∘
x=70
∘
Hence,
The base angles of the triangle are 70
∘
,70
∘
.
Answered by
2
Answer:
Step-by-step explanation:
let the triangle be TRIANGLE ABC ( i was not having triangle sign so ) and
angle B be x. then,
angle B = angle C = x , angle A = 30
now,
angle A + angle B + angle C = 180
30 + x + x = 180
30 + 2x = 180
2x = 180 - 30
2x = 150
x = 75
hence,
angle B = angle C = 75
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