Question

If ( 1 + sin A ) ( 1 - sin A ) = 2/4?​

Answer 1

Answer:

Step-by-step explanation:

( 1 + sin A ) ( 1 - sin A ) = 2/4

1 - sin^2A = 2/4

sin^2A = 1 - 2/4

sin^2A = 1/2

sinA = (1/2)^1/2

sinA = 1/ √2

A=45 degree

Answer 2

Answer:

$(1 + \sin(a) )(1 - \sin(a) ) = \frac{2}{4} \\ {(1)}^{2} - \ {( \sin(a)) }^{2} = \frac{1}{2} \\ {sin}^{2} a = 1 - \frac{1}{2} \\ {sin}^{2} a = \frac{1}{2} \\ sina = \frac{1}{ \sqrt{2} } \\ a = \frac{\pi}{4} = 45$

HOPE IT HELPS..........