Question

(1+sina)square-1 by (1+sina)square +1

Answer 1

Step-by-step explanation:

hope this help u

Answer 2

(1+sin a)²-1 ÷ (1+sin a)² +1

= Taking (1+sin a)² -1 as conjugate

we get,

={ (1+ sin a)⁴+1-2[1(1+sin a)²] } ÷ { ((1 +sin a)²)² - 1² }

Here is your answer buddy...