Question

(1 + cot^2 ) cos^2x = cot^2x

Answer 1

Respuesta:

Explicación paso a paso:

(1+cot^2).cos^2=cotg^2

(1+cos^2/sen^2).cos^2=cotg^2

[(sen^2+cos^2)/sen^2].cos^2=cotg^2

(1/sen^2).cos^2=cotg^2

cos^2/sen^2=cotg^2