True
<span>Cos(A+B)=CosACosB-SinASinB
therefore Cos(A+A)= CosACosA - SinASinA
= Cos^2A - Sin^2A</span>
Answer:
-18
Step-by-step explanation:
A is at -30. AE = 12
So, E is -30+12 = -18
I think the answer is
1) 3/2
Answer:
Yes, they are
Step-by-step explanation:
Because they both end with cd, they are like terms. Anything with the same ending letters are like terms.