U is between N and S.
The order of the letters does not matter, thus:
NU = 1 and US = 2 so NS = 3.
This is only possible if NU + US = NS
Proving U is between N and S.
        
             
        
        
        
Answer:
Infinity
Step-by-step explanation:
It is possible for the coin to endlessly fall on tails, so there are infinity different outcomes.
Tell me if I'm wrong :)
 
        
                    
             
        
        
        
Answer:
789
Step-by-step explanation:
9+10(78)
9+10*78
9+780
789
 
        
                    
             
        
        
        
Answer:
A, C
Step-by-step explanation:
Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.
Examining
A) True

Double angle 
B) False, 
No further development towards a Trig Identity
C) True
Double Angle Sine Formula 

D) False No further development towards a Trig Identity
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