$\frac{c o s^{2} 56^{\circ} + c o s^{2} 34^{\circ}}{s i n^{2} 56^{\circ} + s i n^{2} 34^{\circ}} + 3 t a n^{2} 56^{\circ} \times t a n^{2} 34^{\circ} =$ ___

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Solution

$\frac{c o s^{2} 56^{\circ} + c o s^{2} 34^{\circ}}{s i n^{2} 56^{\circ} + s i n^{2} 34^{\circ}} + 3 t a n^{2} 56^{\circ} \times t a n^{2} 34^{\circ} = \frac{s i n^{2} (90 - 56)^{\circ} + c o s^{2} 34^{\circ}}{c o s^{2} (90 - 56)^{\circ} + s i n^{2} 34^{\circ}} + 3 c o t^{2} (90 - 56)^{\circ} \times t a n^{2} 34^{\circ} = \frac{s i n^{2} 34^{\circ} + c o s^{2} 34^{\circ}}{c o s^{2} 34^{\circ} + s i n^{2} 34^{\circ}} + 3 c o t^{2} 34^{\circ} \times t a n^{2} 34^{\circ} = 1 + 3 = 4$

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Similar questions

\frac{c o s^{2} 56^{\circ} + c o s^{2} 34^{\circ}}{s i n^{2} 56^{\circ} + s i n^{2} 34^{\circ}} + 3 t a n^{2} 56^{\circ} \times t a n^{2} 34^{\circ} =

\frac{{cos}^{2} 56^{\circ} + {cos}^{2} 34^{\circ}}{{sin}^{2} 56^{\circ} + {sin}^{2} 34^{\circ}} + 3 {tan}^{2} 56^{\circ} \times {tan}^{2} 34^{\circ}

\frac{\cos^{2} 56 ° + \cos^{2} 34 °}{\sin^{2} 56 ° + \sin^{2} 34 °} + 3 \tan^{2} 56 ° \tan^{2} 34 ° = ?

3 \frac{1}{2}

{sin}^{2} 34^{\circ} + {sin}^{2} 56^{\circ} + 2 tan 18^{\circ} tan 72^{\circ} - {cot}^{2} 30^{\circ}

Evaluate :

$s i n^{2} 34^{\circ} + s i n^{2} 56^{\circ} + 2 t a n 18^{\circ} t a n 72^{\circ} - c o t^{2} 30 \circ$

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