Simplify the trigonometric expression 1 / 1 + sin Θ + 1 / 1 - sin Θ
1 / [ 1 + sinΘ] + 1 / [1 - sinΘ] getiing a common denominator, we have
[1 - sinΘ + 1 + sinΘ ] / [ 1 - sin2Θ] =
2/[1- sin2Θ] =
2/cos2Θ =
2sec2Θ
