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	If `alpha=[2pi]/7` then `tanalphatan2alpha+tan2alphatan4alpha+tan2alphatan4alpha=` (Doubtnut) View
	If alpha=[2p/7 then tanalphatan2alpha+tan2alphatan4alpha+tan2alphatan4alpha= \| CLASS 12 \| TRIGON... (Doubtnut) View
	If θ =2π/7, prove that tan θ. tan 2θ +tan 2θ.tan 4θ + tan 4θ. tan θ = -7. (EduventureZ MP Alam JEE NEET) View
$Download Lagu If $ \tan \theta=\sqrt{n} $ for some non-square natural number $ \mathrm{n} $, then \( \sec ...$	If $ \tan \theta=\sqrt{n} $ for some non-square natural number $ \mathrm{n} $, then \( \sec ... (PW Solutions) View
	Show that: If `theta = (2pi)/7`, prove that `tan theta tan2theta + tan2theta (Doubtnut) View
	Manipulation: (1 - sin t)(1 - cos t) from (1 + sin t)(1 + cos t) = 5/4 \|\| High School Math (dumplet 餃仔) View
	IIT JEE TRIGONOMETRIC FUNCTIONS If in ` A B C ,A=pi/7,B=(2pi)/7,C=(4pi)/7` then `a^2+b^2+c^2` mus... (Doubtnut) View
$Download Lagu Show that: `(tan^2\ pi/7+tan^2\ (2pi)/7+tan^2\ (3pi)/7)(cot^2\ pi/7 +cot^2\$	Show that: `(tan^2\ pi/7+tan^2\ (2pi)/7+tan^2\ (3pi)/7)(cot^2\ pi/7 +cot^2\ (Doubtnut) View
$Download Lagu Let $ f(n)=2 \cos n x \forall n \in N $. Then $ f(1) f(n+1)-f(n) $ is equal to (A) \( f(n+3)...$	Let $ f(n)=2 \cos n x \forall n \in N $. Then $ f(1) f(n+1)-f(n) $ is equal to (A) \( f(n+3)... (PW Solutions) View
	यदि 4 n alpha = pi हो , तो tan alpha . tan 2 alpha .tan 3 alpha . tan 4 alpha ......tan (2n -2) ... (Doubtnut) View