The value of tan 10° tan 15° tan 75° tan 80° is

(a) −1
(b) 0
(c) 1
(d) None of these

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Solution

Here we have to find:

Now

Hence the correct option is

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Similar questions

$tan 10^{\circ} tan 15^{\circ} tan 75^{\circ} tan 80^{\circ} = ?$
(a) $3$
(b) $13$
(c) $- 1$
(d) $1$

tan 10^{\circ} tan 15^{\circ} tan 75^{\circ} tan 80^{\circ}

tan $10^{o}$ tan $15^{o}$ tan $75^{o}$ tan $80^{o}$ = ?

(a) $\sqrt{3}$ (b) $\frac{1}{\sqrt{3}}$ (c) -1 (d) 1

tan 10^{o} tan 15^{o} tan 75^{o} tan 80^{o} = 1

(i) tan 10^{\circ} tan 15^{\circ} tan 75^{\circ} tan 80^{\circ} = 1

(i i) sin 42^{\circ} sec 48^{\circ} + cos 42^{\circ}

48^{\circ} = 2

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