B

C

A

D

What Is the Value of

cosA

is

1-sinA

cosA

1-sinA

cosA

1+sinA

cosA

1+sinA

1+cosA

1-sinA

By Team Aakash Byju's | 9th December 2022

The correct answer is   option  B. 

Detailed Explanation

cosA

1+sinA

Let us multiply and divided the given expression by 1+sinA.

cosA

1-sinA

cosA

(1-sinA)

(1+sinA)

(1+sinA)

-

=

cosA

1-sin  A

(1+sinA)

2

Since 1 - sin  A = cos  A,  we can write

=

=

cosA

1-sin  A

(1+sinA)

2

2

2

cosA

cos  A

(1+sinA)

2

cos  A

1+sinA