True
<span>Cos(A+B)=CosACosB-SinASinB
therefore Cos(A+A)= CosACosA - SinASinA
= Cos^2A - Sin^2A</span>
Answer: 30 degrees
Step-by-step explanation:
Corresponding angles of similar triangles are congruent.
Answer:
All real numbers
Step-by-step explanation:
Answer:
I believe it is 6
Step-by-step explanation:
If you think about it the opposite of 6 is -6
and the only one that is -6 is c
because it is in absolute value {6}
will be 6 but there is a negative sign which then you just bring that down and you would get -6
Answer:<-26, 26>
Step-by-step explanation: <4(-5), 4(2)> and
<3(-2), 3(6)>
<-20, 8> and <-6, 18>
Now add <(-20+(-6)), (8+18)>
<-26, 26>
