Question

(1-cos альфа) (1+cos альфа) ——————————— sin альфа

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

To simplify the expression (1 - cos α)(1 + cos α) / sin α, we can use the identity (a + b)(a - b) = a^2 - b^2. Let's apply this identity:

(1 - cos α)(1 + cos α) = 1^2 - (cos α)^2 = 1 - cos^2 α = sin^2 α.

Therefore, the expression simplifies to:

sin^2 α / sin α = sin α.

Hence, the simplified form of the expression is sin α.