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makvit [3.9K]
2 years ago
15

Find the values of x and y.

Mathematics
2 answers:
sweet [91]2 years ago
6 0
X is 90°
A triangles angles add up to 180° so
180 - 47 - 90 = y
180 - 137 = y
y = 43°
Paladinen [302]2 years ago
4 0

Answer:

x=90^{\circ}

y=43^{\circ}

Step-by-step explanation:

We have been given an isosceles triangle being two sides equal AB and AC

By the property of isosceles triangle

The sides which are equal will have same base angle

Hence, ∠ABC=∠ACB=47{^\circ}

We know that sum of angles of triangle is 180^{\circ}

∠ABC+ ∠ACB+∠BAC=180^{\circ}      (1)

Since, ∠BAC is the bisector so, ∠BAD and ∠DAC are equal which is y^{\circ}

Now, substituting the values in (1) we get:

47^{\circ}+47^{\circ}+2y^{\circ}=180^{\circ}

94+2y^{\circ}=180^{\circ}

2y=86

y=43^{\circ}

Now, we will consider ΔABD to find x

∠BAD=[tex]43^{\circ},∠ADB=x^{\circ}∠ABD=46^{\circ}

Now, Apply the sum of angles of triangle is 180^{\circ} we get:

47^{\circ}+x^{\circ}+43^{\circ}=180^{\circ}

90^{\circ}+x^{\circ}=180^{\circ}

x^{\circ}=90^{\circ}



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