Answer:
396.8
Step-by-step explanation:
Multiply them to each other.
I’m a little confused do you have a picture I could solve for cos then
Answer:
The coordinates of B' are (-3, 5).
Step-by-step explanation:
For every 90 degrees rotated, the coordinate numbers switch and one is multiplied by -1, when clockwise it's the 2nd one, and when counterclockwise, it's the 1st.
{-3x - 10y = -4} Answer: x = − 10/3y + 4/3
{x - 5y = 18} Answer: x = 5y + 18