Answer:
2 + 2 = 4
OR
2 + 2 = 22
Step-by-step explanation:
Heh
A = 1/2 hb
20 = 1/2 x 4 x b
20 = 2 b
b = 20 /2
b = 10
answer is <span>10 m</span>
Answer:
The possible combinations of two letters is 12
Step-by-step explanation:
Here, we want to count the possible combinations of two letters
Now, for the first letter any point in time, we have 4 letters to pick from,
For the second letter we have 3 letters to pick from
So therefore, we have the possible combinations as;
4 * 3 = 12
Answer:
Step-by-step explanation:
Use the identity
where
and
.
This results in 
From the unit circle we know that
and 
Substitute

Simplify
