Question

formulario de identidades trigonométricas

Answer 1

sen²x +cos² x = 1
sec²x = 1 + tan²x
cosc²x = 1 + cotg²x
sen ( a+b) = sena cosb + cosa senb
sen(a - b) = sena cosb + cosa senb
cos (a + b) = cosa cosb - sena senb
cos ( a- b ) = cosa cosb + sena senb
tan(a +b) = tana +tanb/ 1- tana tanb
tan ( a- b) = tana - tanb / 1 + tana tanb
sen2a = 2 sena cosb
cos2a =cos²a - sen²a
tan2a = 2tana/1 - tan²a