prove that cos2○(1+tan2○)=1
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Answer:
I think this will help you
Step-by-step explanation:
cos 2 θ(1+tan 2 θ)=1
Take L.H.S
cos 2 θ(1+tan 2 θ)
cos 2 θ+cos 2 θ.tan
2 θ cos 2 θ+cos
2 θ. cos 2 θ
sin 2 θ
cos 2 θ+sin 2 θ
=1
=R.H.S.
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Answer:
see above pic...
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