<h3>Answer: C) none of the equations are identities</h3>
If you plugged theta = 0 into the first equation, then you would have
sin(45) + cos(45) = sin(0) + cos(0)
sqrt(2) = 1
which is a false equation. We don't have an identity here.
The same story happens with the second equation. Plug in theta = 0 and it becomes
cos(60) - sin(60) = cos^2(0) + tan(0)
1/2 - sqrt(3)/2 = 1 + 0
-0.37 = 1 
which is false. 
 
        
        
        
Answer:
A y=tanx
Step-by-step explanation:
mark me brainliest pl 
 
        
             
        
        
        
Answer:
Option E - None of these answers is reasonable.
Step-by-step explanation:
To find : Convert 17.42 m to customary units ?
Solution : 
The customary units is defined as the measure length and distances in the customary system are inches, feet, yards, and miles.
The options belong to feet and inches.
We have to convert meter into inches, feet.
Meter into feet,






Now, Feet into inches



i.e.  
or 
None of these answers is reasonable.
Therefore, Option E is correct.
 
        
             
        
        
        
9000mm is equivalent to 900cm