Answer:
-cos(2A)
Step-by-step explanation:
We know that (a+b) (a-b) = a^2-b^2
So it means we can simplify to sin^2(A)-cos^2(A) and we know cos^2(A) - sin^2(A) = cos(2A) but we will just multiply by -1 and we get - cos(2A)
Answer:
I guess the answer is
8
Step-by-step explanation:
Answer:
3:00 pm
Step-by-step explanation:
5:30 pm
- 2 30
----------
3:00 pm
Answer:
C
Step-by-step explanation:
Givens
Original cost = 29 dollars.
Discount = 40% on the second shirt.
Formula
cost after discount = (2 × list price) – (list price × discount percentage)
Solution
Cost after discount = 2 * 29 - 29*40/100
Cost after discount = 58 - 11.60
Cost after discount = 46.40
Answer:
If you're asking 'how to find the intersection of two sets' then here is the answer!
Step-by-step explanation:
The INTERSECTION of two sets is the set of elements which are in both sets. For example: let A = (1,2,3) and B = (3,4,5). The INTERSECTION of A and B, written A B = (3). Sometimes there will be no intersection at all.
Does this help you?
