Answer:
number one
Step-by-step explanation:
if if 4.5 - 2.5 the answer is 2 that means the answer is number one
 
        
                    
             
        
        
        
Answer:

look from the tan A angle , the opposite is 28 and adjacent is 45 
 
        
             
        
        
        
The answer is 2/11 in simplest form
        
             
        
        
        
Answer:
The first one and the last one
Step-by-step explanation:
To sub x>0 and x<0 into every functions.
Then, u will get some function that y doesn't have a negative value or positive value.
Then, these function doesn't fulfill the range.
Then, u will get the answer.
 
        
             
        
        
        
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
• 1 + cot²x = csc²x
Consider the left side
 x -
 x -  x
 x
Factorise as a difference of squares
= (csc²x - cot²x)(csc²x + cot²x)
= (1 + cot²x - cot²x)(csc²x + cot²x)
= csc²x + cot²x
= csc²x + csc²x - 1
= 2csc²x - 1 = right side ⇒ verified