Answer:
22
Step-by-step explanation:
(a*b)-c
(4 * 6) - 2
24 - 2
22
The third one would be the correct answer. I separately multiplied each number in the first section by each number in the second section. For instance, 0 x 2 is 0, 4 x 5 is 20, 5 x 3 is 15, and 2 x 0 is 0. All of these numbers are in the third answer.
is in quadrant I, so 
.
is in quadrant II, so 
.
Recall that for any angle 
,
Then with the conditions determined above, we get
and
Now recall the compound angle formulas:
as well as the definition of tangent:
Then
1. 
2. 
3. 
4. 
5. 
6. 
7. A bit more work required here. Recall the half-angle identities:
Because is in quadrant II, we know that 
is in quadrant I. Specifically, we know 
, so 
. In this quadrant, we have 
, so
8. 
