Step-by-step explanation:
angle one one is the answer of second question
Answer:
D: {-4, -2, 1}
R: {39, 9, -10}
Step-by-step explanation:
Answer:
Step-by-step explanation:
I would first expand out the numerator since it would become
, which would allow me to use the double angle formula for sine and the Pythagorean identity.
Answer:
A. 
Step-by-step explanation:
The scale factor of dilation is the ratio of the length of any of the corresponding sides of rectangle R'S'T'Q to rectangle PQRS.
R'S' = 3
RS = 15
Thus,
Scale factor = 
Simplify
Scale factor = 