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Prove that cos square theta *1+tan square theta =1 |
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Answer» 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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