Prove that tan- -sin 2- 1-cos 2- and hece deduce the values of tan 15 oand tan 22 1 2 o

sin2α1+cos2α=sin2αsin^2α+cos^2α+cos^2α sin^2α =2sinα cosα2cos^2α=tanα tan15=sin2(15)1+cos2(15)=sin301+cos30=12+√(3) tan2212=sin451+cos45=11+ ...

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Trigonometric Ratios of Multiples of an Angle

Prove that ...

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Prove that $tan α = \frac{sin 2 α}{1 + cos 2 α}$ and hece deduce the values of $tan 15^{o}$ and $tan {22 \frac{1}{2}}^{o}$

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