pick an angle and show that the equation fails.
tan(pi/2) ≠ 2 tan(pi/4)
Show that the following are not trigonometric identities
1.tan 2x = 2tan x
2. sec x= sqr rt 1+tan^2 x
3. sin(x+y)=sin x +sin y
1 answer
1.tan 2x = 2tan x
2. sec x= sqr rt 1+tan^2 x
3. sin(x+y)=sin x +sin y
1 answer
2 answers
2 answers
1 answer
2 answers