Question

determine these without the use of the calculator ​

Answer 1

Answer:

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Step-by-step explanation:

maybe next time.....

Answer 2

$solution \: 1 \\ { \cot}^{2} 45 + { \tan }^{2} 60 - { \sin }^{2}0 - { \cos }^{2} 0 \\ = {(1)}^{2} + { (\frac{1}{ \sqrt{3} } })^{2} - 0 - 0 \\ = 1 + \frac{1}{3} \\ = \frac{3 + 1}{3} \\ = \frac{4}{3}$

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