Question

(1 + tan*A)(1-sinA)(1+sinA)​

Answer 1

Answer:

Step-by-step explanation:

Heya user ,

Here is your answer !!

( 1 + tan²A ) ( 1 - sinA ) ( 1 + sinA )

= ( 1 + tan²A ) ( 1 - sin²A )

= sec²A . cos²A

= 1/cos²A . cos²A

= 1 ..... [ ANSWER ] .

Note :

1 + tan²A = sec²A .

and ,

cos²A + sin²A = 1

=> 1 - sin²A = cos²A .

Hope it helps !!