A Level Maths Notes: FP2 - Differentiating Inverse Trigonometric Functions
If
then
we cannot find
directly.
Instead we take the sin of both sides to obtain
and
differentiate implicitly using the chain rule. We obtain
![]()
Since originally
was
given as a function of
we
would normally find
as
a function of
We
can do this for
using
the identity
We
rearrange this to make
the
subject:
Hence![]()
If
then
we cannot find
directly.
Instead we take the cos of both sides to obtain
and
differentiate implicitly using the chain rule. We obtain
![]()
Since originally
was
given as a function of
we
would normally find
as
a function of
We
can do this for
using
the identity
We
rearrange this to make
the
subject:
Hence![]()
If
then
we cannot find
directly.
Instead we take the
of
both sides to obtain
and
differentiate implicitly using the chain rule. We obtain
![]()
Since originally
was
given as a function of
we
would normally find
as
a function of
We
can do this for
using
the identity![]()
Hence![]()