Evaluate each of the following4 230-1 sin 260-cos 245-

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Method of Finding HCF

Evaluate each...

Question

Evaluate each of the following

$\frac{4}{\cot^{2} 30 °} + \frac{1}{\sin^{2} 60 °} - \cos^{2} 45 °$

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Solution

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\frac{s i n^{2} 45^{\circ} + c o s^{2} 45^{\circ}}{t a n^{2} 60^{\circ}}

\frac{s i n 60^{\circ}}{c o s^{2} 45^{\circ}} - c o t 30^{\circ} + 15 c o s 90^{\circ}

Evaluate each of the following

$c o s^{2} 30^{o} + c o s^{2} 45^{o} + c o s^{2} 60^{o} + c o s^{2} 90^{o}$

\frac{1}{2} \sin^{2} 90 ° - 2 \cos^{2} 90 ° + \frac{1}{24} \cos^{2} 0 °

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