Answer:
a = 21
Step-by-step explanation:
If x = h is a zero of a polynomial then f(h) = 0, thus
p(-  ) = 27( -
 ) = 27( -  )³ - a(-
 )³ - a(-  ) - (-
 ) - (-  ) + 3 = 0, that is
 ) + 3 = 0, that is
27 (-  ) -
 ) -  a +
 a +  + 3 = 0
 + 3 = 0
- 1 -  a +
 a +  = 0 ( multiply through by 9 to clear the fractions )
 = 0 ( multiply through by 9 to clear the fractions )
- 9 - a + 30 = 0
- a + 21 = 0 ( subtract 21 from both sides )
- a = - 21 ( multiply both sides by - 1 )
a = 21
 
        
             
        
        
        
Given:

x lies in the III quadrant.
To find:
The values of  .
.
Solution:
It is given that x lies in the III quadrant. It means only tan and cot are positive and others  are negative.
We know that,




x lies in the III quadrant. So,


Now, 



And,





We know that,



Therefore, the required values are  .
.
 
        
             
        
        
        
I’m pretty sure it’s b but idk 100% sorry if it’s wrong
        
             
        
        
        
Answer:

Step-by-step explanation:
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