Math, asked by RumiKumari, 7 months ago

7C
cot-1
6.
V1 + sin x + v1-sin x
1 + sin x-V1-sin x
1.0<x
0<x<​

Answers

Answered by bhavinsundar
2

Answer:Verry easy

Step-by-step explanation:

⇒cot  

−1

(  

1−sinx

​  

−  

1+sinx

​  

 

1−sinx

​  

+  

1+sinx

​  

 

​  

)

⇒cot  

−1

(  

(1−sinx)−(1+sinx)

(  

1−sinx

​  

+  

1+sinx

​  

)  

2

 

​  

)

⇒cot  

−1

(  

1−sinx−1−sinx

1−sinx+1+sinx+2  

1−sin  

2

x

​  

 

​  

)

⇒cot  

−1

(  

−2sinx

2+2  

cos  

2

x

​  

 

​  

)

⇒cot  

−1

(  

−sinx

1+cosx

​  

)

⇒cot  

−1

 

​  

 

−2sin  

2

x

​  

cos  

2

x

​  

 

1+2cos  

2

x/2−1

​  

 

​  

 

⇒cot  

−1

(  

sinx/2

cosx/2

​  

)

⇒cot  

−1

(−cotx/2)

⇒cot  

−1

(cot(π−x/2))

⇒π−x/2.

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