Question

Trigonometry
Please solve this​

Answer 1

Answer:

$2( \cos ^{4} 60 + \sin ^{4} 30) - ( \tan ^{2} 60 + \cot^{2}45) + 3 \sec ^{2} 60 \\ 2(( \frac{1}{2} ) ^{4} + ( \frac{1}{2} ) ^{4}) - ( \sqrt{3} ^{2} + {1}^{2} ) + 3(2) ^{2} \\ 2( \frac{1}{16} + \frac{1}{16} ) - (3 + 1) + 3(4) \\ 2( \frac{1 + 1}{16} ) - 4 + 12 \\ 2( \frac{2}{16} ) - 4 + 12 \\ 2( \frac{1}{8} ) - 4 + 12 \\ \frac{1}{4} - 4 + 12 \\ \frac{1 - 4(4) + 12(4)}{4} \\ \frac{1 - 16 + 48}{4} \\ \frac{49 - 16}{4} = \frac{33}{4}$

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