Almost positive isosceles triangle
Answer:
31.7 cm²
Step-by-step explanation:
The area (A) of the triangle is calculated as
A =
absinC
where a, b are the 2 sides given and C the angle between them
∠ C = 180° - (72 + 59)° = 180° - 131° = 49° , thus
A = 0.5 × 12 × 7 × sin49° ≈ 31.7 cm² ( to 1 dec. place )
The slope of the line is 2/3, so the angle is arctan(2/3) ≈ 33.69°.
I think the answer is y=10
The correct answer is B because 6 needs to be included.