Question

33) Prove That cosA/(1+sin A)(1+sin A)/cos A-2seca​

Answer 1

Answer:

Step-by-step explanation:

= 2/cos=2secA = R.H.S.

Answer 2

Answer:

Step-by-step explanation:

Let the polynomial to be subtracted be M

According to question,

2x  

3

−3x  

2

y+2xy  

2

+3y  

3

−M=x  

3

−2x  

2

y+3xy  

2

+4y  

3

 

⇒M=(2x  

3

−3x  

2

y+2xy  

2

+3y  

3

)−(x  

3

−2x  

2

y+3xy  

2

+4y  

3

)

⇒M=2x  

3

−3x  

2

y+2xy  

2

+3y  

3

−x  

3

+2x  

2

y−3xy  

2

−4y  

3

 

Collecting like terms,

⇒M=2x  

3

−x  

3

−3x  

2

y+2x  

2

y+2xy  

2

−3xy  

2

+3y  

3

−4y  

3

 

⇒M=x  

3

−x  

2

y−xy  

2

−y  

3