Asked by Hannah
Perform the addition or subtraction.
tanx - sec^2x/tanx
tan^2(x)/tan(x) - sec^2x/tanx =
tan^2x sec^2x / tanx
then I use the identity 1+tan^2u=sec^2u
I do not know what to do at this point.
tanx - sec^2x/tanx
tan^2(x)/tan(x) - sec^2x/tanx =
tan^2x sec^2x / tanx
then I use the identity 1+tan^2u=sec^2u
I do not know what to do at this point.
Answers
Answered by
Reiny
from you second line
tan^2(x)/tan(x) - sec^2x/tanx
= (tan^2 x - sec^2 x)/tanx
= (tan^2 x - (1 + tan^2 x))/tanx
= -1/tanx or -cotx or -sinx/cosx
tan^2(x)/tan(x) - sec^2x/tanx
= (tan^2 x - sec^2 x)/tanx
= (tan^2 x - (1 + tan^2 x))/tanx
= -1/tanx or -cotx or -sinx/cosx
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