Answer:
y = 167°
Step-by-step explanation:
The vertex of the triangle = 154° ( alternate angle to 154° )
The triangle has 2 equal legs so is isosceles with 2 base angles congruent
base angle = =
= 13°
base angle and y are adjacent angles, lie on straight line AB and sum to 180°
y + 13° = 180° ( subtract 13° from both sides )
y = 167°
First you had to switch sides of equation.
Then you divide by two from both sides of equation form.
Simplify.
Next, subtract by i from both sides of equation form.
Finally, simplify by equation.
Final answer:
Hope this helps!
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-Charlie