Question

first and clear ans_ will be marked as brainliest.......​

Answer 1

Step-by-step explanation:

Square root of 1-cosA/1+cosA

Rationalize it

1-cosA/1+cosA x 1-cosA/1-cosA

We get (1-cosA)²/1-cos²A

(1-cosA)²/sin²A

Square root of above expansion is

1-cosA/sinA

we can write it as cosecA-cotA