The two angles are vertical angles and are identical.
Set them equal to each other and solve for y:
5y = 115
Divide both sides by 5:
y = 115/5
y = 23
Answer: y = 23 degrees.
Answer:
11.4
Step-by-step explanation:
You have to use the Pythagorean theorem: c = √(a² + b²)
√(7² + 9²) ≈ 11.4
Okay, the number above the sigma(4) indicates what value you go to, and what's below the sigma tells you where to start, and the stuff on the right is the expression you're using.
So we start with 1 and go to 4, adding all the values in between.
(2(1))^2 + (2(2))^2 + (2(3))^2 + (2(4))^2
2^2 + 4^2 + 6^2 + 8^2
4 + 16 + 36 + 64
120
Sin = opposite/hypotenuse, so one side is 7 and the other is 8.
sqrt(64-49)=sqrt(15) which is the third side, and tangeant = opposite/adjacent, which is 7/sqrt(15). Cotangeant is 1/tangeant, so it would be sqrt(15)/7
Coordinates
A=(-2,1)
B=(-3,4)
C=(-6,3)
Its not your fault