Question

reducir E= sen (-x) Csc (-x) + Tg x Ctg (-x)

Answer 1

Reducido resulta 0

Explicación paso a paso:

$sen (-x) Csc (-x) + Tg( x )Ctg (-x)$

Usando la identidad

$sen (-x) = - sen (x)$

$Csc (-x) = - Csc (x)$

$Ctg (-x) = - Ctg (x)$

$(- sen (x)) (- Csc (x)) + (Tg( x ))( - Ctg (x))$

$sen (x) Csc (x) - Tg( x )Ctg (x)$

$sen (x) Csc (x) = 1$

$Tg( x )Ctg (x) = 1$

Entonces

$1 - 1 = 0$