Question

(1 - sin x)(1 + sin x) = cos^2 x verify the identity

Answer 1

\[(1 - \sin x)/(1 + \sin x) = cosx/( 1+sinx)\]

Answer 2

\[(1-b)(a+b)=1-b^2\]

Answer 3

ca you explain that to me?

Answer 4

second "identity" you wrote is wrong

Answer 5

i re wrote it as the first answer thing:)

Answer 6

this \((1 - \sin( x))(1 + \sin (x)) = \cos^2 (x)\) is what you are trying to verify, right?

Answer 7

no

Answer 8

oh sorry

Answer 9

(1-sinx)/cosx=cosx/(1+sinx)

Answer 10

Remember that \[\cos^{2}(x) + \sin^{2}(x) = 1\]

Answer 11

thats it @satellite73

Answer 12

i dont understand that one

Answer 13

@mebs

Answer 14

can you please explain it to me ?