ans me plzzzz......
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Step-by-step explanation:
L.H.S.=
cos(2π+θ)cosec(2π+θ)tan( π /2 +θ) by
sec( π /2 +θ)cosθcot(π+θ)
= cos(θ)cosec(θ)(-cotθ) (-cosecθ)cosθcot(θ)
= -cosθcosecθcotθ -cosθcosecθcotθ
=1=R.H.S.
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b) -1 is answer ...........
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