If tan theta = t, then tan 2theta + sec 2thet | vedclass

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Question

(A) Given $	an 	heta = t.$We know the double angle formulas:$	an 2	heta = \frac{2	an 	heta}{1 - 	an^2 	heta} = \frac{2t}{1 - t^2}$$\cos 2	het

Vedclass · Accepted Answer

$\frac{1 + t}{1 - t}$

Vedclass · Answer

(A) Given $	an 	heta = t.$We know the double angle formulas:$	an 2	heta = \frac{2	an 	heta}{1 - 	an^2 	heta} = \frac{2t}{1 - t^2}$$\cos 2	heta = \frac{1 - 	an^2 	heta}{1 + 	an^2 	heta} = \frac{1 - t^2}{1 + t^2}$Therefore,$\sec 2	heta = \frac{1}{\cos 2	heta} = \frac{1 + t^2}{1 - t^2}$Now,$	an 2	heta + \sec 2	heta = \frac{2t}{1 - t^2} + \frac{1 + t^2}{1 - t^2}$$= \frac{2t + 1 + t^2}{1 - t^2} = \frac{(1 + t)^2}{(1 - t)(1 + t)}$$= \frac{1 + t}{1 - t}$.

If $\tan \theta = t,$ then $\tan 2\theta + \sec 2\theta = $

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