Answer:
6 times n is less than or equal to 30
 
        
                    
             
        
        
        
True, this is a Pythagorean identity.
 
        
             
        
        
        
Answer:
-1/2 > x > -3
Step-by-step explanation:
i) 
-2x+3>4
-2x> 1
 x < -1/2
ii)
-2x+3<9
-2x<6
 x > -3
= -1/2 > x > -3
 
        
             
        
        
        
Answer:
just learn the sin value of all the degrees 
the cos values are opposite to the sin values example sin 30 degree = cos 60 degrees. and sin 45 and cos 45 remains same . use the same logic for tan and cot and also for sec and cosec . tan values are sin degrees / cos degrees 
 
        
             
        
        
        
Answer:
SID WILL FINISH FIRST
Step-by-step explanation:
 ÷
 ÷ 
 *
 *  = 12/3 = 4
 = 12/3 = 4
~~~~~~~~~~~~~~~~~~~
 ÷
 ÷ 
 *
 *  = 9/3 = 3
 = 9/3 = 3