Given the expression ( sec x - csec x ) / (tan x - cot
x)
We need to simplify.
We
will use trigonometric identities to simplify.
We know
that:
sec x = 1/cos x
csec x =
1/sin x
tan x = sinx/cosx
cot
x = cos x/ sin x
We will substitute into the
expression.
==> (1/cos x - 1/sin x ) / (sin x / cos
x - cos x/ sin x)
==>[ ( sin x - cos x) / sinx*cosx]
/ [ (sin^2 x - cos^2 x)/ cosx*sinx
We will reduce
similar:
==> (sinx - cos x) / (sin^2 x - cos^2
x)
Now we will simplify the
denominator.
==> (sin x - cos x) / (sin x - cos
x)(sinx + cos x)
Reduce similar
terms.
==> 1/ (sin x + cos
x)
Then the expression ( sec x - csec
x)/(tanx - cot x) can be written as : 1/(sin x + cos
x)
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