If f(x)=1-x^2/1+x^2 show that f (tanø ) = cos 2ø. .
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Answer:
hope it's help
Step-by-step explanation:
The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends.
Answered by
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Step-by-step explanation:
f(x)=
1+x
2
2x
now, f(tanθ)=
1+tan
2
θ
2tanθ
=
sec
2
θ
2tanθ
∴ f(tanθ)=2
cosθ
sinθ
×cos
2
θ
=2sinθcosθ
f(tanθ)=sin2θ
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