Question

demostrar que
Cot^2x + sen^2x + cos^2x+ = csc^2x

Answer 1

Debemos recordar que:

•sen²x+cos²x=1

${ctg^2x+sen^2x+cos^2x=}\\\\{ctg^2x+1=}\\\\{\frac{cos^2x}{sen^2x}+1=}\\\\{\frac{cos^2x+sen^2x}{sen^2}=}\\\\{\frac{1}{sen^2x}=}\\\\{\boxed{csc^2x}}\\\\{\mathbf{salu2.!!\ ')}}\\{\mathbf{Wellington}}$