Explain why this is a conditional equation
1- tan squared x = sec squared x
but this is an identity
1+ tan squared x = sec squared x
2007-05-13 08:57:26 · 3 answers · asked by Alexandria 1 in Science & Mathematics ➔ Mathematics
One is true for all values of x and the other is true only for very limited values of x although I haven't solved to find which values they are.
An identity means that for any value of x you substitute it is always true.
2007-05-13 09:02:19 · answer #1 · answered by Anonymous · 0⤊ 0⤋
1-sin^2/cos^2=1/cos^2
cos^2 -sin^2= 1which is cos 2x=1 and 2x= 2kpi and x=kpi
so it is not true for al lx
The second
The first side is (cos^2+sin^2)/cos^2 = always to 1/cos^2
2007-05-13 09:06:58 · answer #2 · answered by santmann2002 7 · 0⤊ 0⤋
mmhh of corse.. what the last dude said..
2007-05-13 09:09:23 · answer #3 · answered by Anonymous · 0⤊ 0⤋