Step-by-step explanation:
the speed of the first ship is 20 mph
and the second ship is 15 mph
Answer:
Step-by-step explanation:
since -1≤sin2x≤1 no x values would satisfy the equation
Answer:
(8,-2)
Explanation:
you reflect it over the x-axis
Answer:
I believe the answer is C. 90 degrees
Step-by-step explanation:
First you find the lengths of the two vectors, which are both
. Then you find the angle given the cos using: cos(∅)=
=
= 0. Then using ∅=acos(0)=
= 90°