The answers are C and also D
Here’s the answers hope this helps.
Given:
Consider the given graph as a reference of the solution.
To find:
Explanation:
By analyzing the graph, we can define the coordinate of vector u and v:
![\[\begin{align} & \vec{u}=(-8,-9)-(0,0)=(-8,-9) \\ & \vec{v}=(3,7)-(0,0)=(3,7)\end{align}\]](https://tex.z-dn.net/?f=%5C%5B%5Cbegin%7Balign%7D%20%26%20%5Cvec%7Bu%7D%3D%28-8%2C-9%29-%280%2C0%29%3D%28-8%2C-9%29%20%5C%5C%20%20%26%20%5Cvec%7Bv%7D%3D%283%2C7%29-%280%2C0%29%3D%283%2C7%29%5Cend%7Balign%7D%5C%5D)
Now, let perform the dot product of two vectors,
Now, perform the required operation,
Final answer:
Hence, the required solution is:
Answer:1.) m∠A +m∠B +m∠C = (sum of angles in a triangle △)
2.) 24° + x + m∠C = 180°
3.) x = 156° - m∠C
Step-by-step explanation:
1. m∠A +m∠B +m∠C = (sum of angles in a triangle △)
2. 28°+x−4° + ______ = 180°
24° + x + m∠C = 180°
3) x = 180° - 24° - m∠C
x = 156° - m∠C
Answer:
Third side lies between 10 & 22.
Step-by-step explanation:
Any side of triangle is greater than difference of two sides. Sum of two sides of triangle is always greater than third side.
So, letting third size be = x
Difference of two sides < Third side x < Sum of two sides
Difference of two sides = 16 - 6 = 10 , Sum of two sides = 16 + 6 = 22
Hence, 10 < Third side x < 22
