" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
debes saber que:
tgx = senx / cosx → tan²x = sen²x / cos²x
ctgx = cosx / senx → ctg²x = cos²x / sen²x
y la identidad fundamental
cos²x + sen²x = 1
entonces reemplazas eso
1 = 1